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Upstream Updates - Mon Mar 30 00:27:20 UTC 2026 #1491

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Agave Wiki

409b7b6e1c698dd1378d629e1af8a5258b97c086^..6da0ee862119ee748c01d56044af3592b93b551c

diff --git a/Feature-Gate-Tracker-Schedule.md b/Feature-Gate-Tracker-Schedule.md
index 9c8fa60..9355b9f 100644
--- a/Feature-Gate-Tracker-Schedule.md
+++ b/Feature-Gate-Tracker-Schedule.md
@@ -3,8 +3,8 @@ The version floor is the current minimum supported software version for a cluste
 
 || Testnet  | Devnet   | Mainnet Beta |
 | :-----: | :------: | :------: | :----------: |
-| Current floor | Agave: v3.1.8 <br> Frankendancer: v0.812.30108 | Agave: v3.1.7 <br> Frankendancer: v0.812.30108 | Agave: v3.1.0 <br> Frankendancer: v0.806.30102 |
-| Next expected floor * | -- | -- | -- |
+| Current floor | Agave: v3.1.8 <br> Frankendancer: v0.812.30108 | Agave: v3.1.7 <br> Frankendancer: v0.812.30108 | Agave: v3.1.0 <br> Frankendancer: v0.812.30108 |
+| Next expected floor * | Agave: v4.0.0-beta.0 <br> Frankendancer: v0.903.40004 | -- | -- |
 
 * These dates are tentative. Please keep an eye out for comms as the dates near
 
@@ -13,32 +13,30 @@ The version floor is the current minimum supported software version for a cluste
 ### Pending Mainnet Beta Activation
 | Key | SIMD | Agave Version | FD Version | Jito Version | Testnet | Devnet | Description | Owner |
 |-----|------|---------------|------------|--------------|---------|--------|-------------|-------|
-| CHaChatUnR3s6cPyPMMGNJa3VdQQ8PNH2JqdD4LpCKnB | 0332  | v3.1.0 | v0.812.30108 | v3.1.0 | 909 | 1029 | SIMD-0332: Reduce ChaCha rounds for Turbine from 20 to 8 | alexpyattaev |
 | Gx4XFcrVMt4HUvPzTpTSVkdDVgcDSjKhDN1RqRS6KDuZ | 0185  | v3.1.0 | v0.811.30108 | v3.1.0 | 910 | 1033 | SIMD-0185: Vote Account V4 | buffalojoec |
 | 5xXZc66h4UdB6Yq7FzdBxBiRAFMMScMLwHxk2QZDaNZL | 0321  | v3.1.0 | v0.806.30102 | v3.1.0 | 911 | 1034 | SIMD-0321: Instruction Data Pointer in VM Register 2 | buffalojoec |
 | 4WeHX6QoXCCwqbSFgi6dxnB6QsPo6YApaNTH7P4MLQ99 | 0083  | v3.1.7 | v0.811.30108 | v3.1.7 | 915 | 1036 | SIMD-0083: Relax intrabatch account locks | 2501babe |
+| rexav5eNTUSNT1K2N7cfRjnthwhcP5BC25v2tA4rW4h | 0444  | v3.1.7 | v0.811.30108 | v3.1.7 | 928 | 1043 | SIMD-0444: Relax program data account check in migration | febo |
+| ptokFjwyJtrwCa9Kgo9xoDS59V4QccBGEaRFnRPnSdP | 0266  | v3.1.7 | v0.811.30108 | v3.1.7 | 930 | 1044 | SIMD-0266: Efficient Token program | febo |
 
 ### Pending Devnet Activation
 | Key | SIMD | Agave Version | FD Version | Jito Version | Testnet | Devnet | Description | Owner |
 |-----|------|---------------|------------|--------------|---------|--------|-------------|-------|
-| rexav5eNTUSNT1K2N7cfRjnthwhcP5BC25v2tA4rW4h | 0444  | v3.1.7 | v0.811.30108 | v3.1.7 | 928 |  | SIMD-0444: Relax program data account check in migration | febo |
-| ptokFjwyJtrwCa9Kgo9xoDS59V4QccBGEaRFnRPnSdP | 0266  | v3.1.7 | v0.811.30108 | v3.1.7 | 930 |  | SIMD-0266: Efficient Token program | febo |
 
 
 ### Pending Testnet Activation
 | Key | SIMD | Agave Version | FD Version | Jito Version | Testnet | Devnet | Description | Owner |
 |-----|------|---------------|------------|--------------|---------|--------|-------------|-------|
-| 2GCrNXbzmt4xrwdcKS2RdsLzsgu4V5zHAemW57pcHT6a | 0458  | v4.0.0 |  |  |  |  | SIMD-0458: Stop use static SimpleVote transaction cost | tao-stones |
-| 6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331 | 0312  | v4.0.0 |  |  |  |  | SIMD-0312: CreateAccountAllowPrefund | joncinque |
-| bn2oPgpkzQPT3tohMaAsMVGjhDmmDa4jCaVPqCFmtxM | 0284  | v4.0.0 |  |  |  |  | SIMD-0284: Add little-endian compatibility for alt_bn128 | samkim-crypto |
-| bn1hKNURMGQaQoEVxahcEAcqiX3NwRs6hgKKNSLeKxH | 0302  | v4.0.0 |  |  |  |  | SIMD-0302: Add alt_bn128 G2 syscalls | samkim-crypto |
-| 6aHuNsUmwSzCEMjrBzBCYaxHAyAcQBjVES92JigHBDuC | 0406  | v4.0.0 |  |  |  |  | SIMD-0406: Maximum instruction accounts | LucasSte |
-| b1sgUiJ3qu7hYm3tNDyyqZNQd6gLGJmJppnLNa93PCQ | 0388  | v4.0.0 |  |  |  |  | SIMD-0388: BLS12-381 syscalls | samkim-crypto |
-| 2uxQgtKa2ECHGs67Zdj7dgmzn2w9HiqhdcedwCWfYzzq | 0387  | v4.0.0 |  |  |  |  | SIMD-0387: BLS Pubkey Management in Vote Account | buffalojoec |
-| VATtb1DepUwdPh5bFVasdtkbeDNsftZSRzr2aKpKWJA | 0357  | v4.0.0 |  |  |  |  | SIMD-0357: Alpenglow VAT implementation | AshwinSekar |
-| zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN |   | v4.0.0 |  |  |  |  | Re-enables zk-elgamal-proof program | samkim-crypto |
-| shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU | 0337  | v4.0.0 |  |  |  |  | SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules | ksn6 |
-| vbiddkDHTSHSvL8B21AetWvTBLxxUZ1FmU6DFjztyRn | 0340  | v4.0.0 |  |  |  |  | SIMD-0340 validate chained block id | AshwinSekar |
-| 76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B | 0249  | v4.0.0 |  |  |  |  | SIMD-0249: Delay Commission Updates | joncinque |
-| ptrXWLkSDMZZmZN8GAT6W5yW4EvYByfw6cRRHbXwQNS | 0449  | v4.0.0 |  |  |  |  | SIMD-0449: Direct Account Pointers in Program Input | febo |
-| STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk | 490  | v4.0.0 |  |  |  |  | SIMD-0490: Upgrade BPF Stake Program to v5.0.0 | 2501babe |
+| 2GCrNXbzmt4xrwdcKS2RdsLzsgu4V5zHAemW57pcHT6a | 0458  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0458: Stop use static SimpleVote transaction cost | tao-stones |
+| 6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331 | 0312  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0312: CreateAccountAllowPrefund | joncinque |
+| bn2oPgpkzQPT3tohMaAsMVGjhDmmDa4jCaVPqCFmtxM | 0284  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0284: Add little-endian compatibility for alt_bn128 | samkim-crypto |
+| bn1hKNURMGQaQoEVxahcEAcqiX3NwRs6hgKKNSLeKxH | 0302  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0302: Add alt_bn128 G2 syscalls | samkim-crypto |
+| 6aHuNsUmwSzCEMjrBzBCYaxHAyAcQBjVES92JigHBDuC | 0406  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0406: Maximum instruction accounts | LucasSte |
+| 2uxQgtKa2ECHGs67Zdj7dgmzn2w9HiqhdcedwCWfYzzq | 0387  | v4.0.0-beta.0 | v0.902.40002 |  |  |  | SIMD-0387: BLS Pubkey Management in Vote Account | buffalojoec |
+| b1sgUiJ3qu7hYm3tNDyyqZNQd6gLGJmJppnLNa93PCQ | 0388  | v4.0.0-beta.2 | v0.902.40002 |  |  |  | SIMD-0388: BLS12-381 syscalls | samkim-crypto |
+| zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN |   | v4.0.0-beta.0 | v0.902.40002 |  |  |  | Re-enables zk-elgamal-proof program | samkim-crypto |
+| shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU | 0337  | v4.0.0-beta.3 | v0.903.40004 |  |  |  | SIMD-0337: Markers for Alpenglow Fast Leader Handover, DATA_COMPLETE_SHRED placement rules | ksn6 |
+| 76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B | 0249  | v4.0.0-beta.0 | v0.903.40004 |  |  |  | SIMD-0249: Delay Commission Updates | joncinque |
+| VATtb1DepUwdPh5bFVasdtkbeDNsftZSRzr2aKpKWJA | 0357  | v4.0.0-beta.0 | v0.903.40004 |  |  |  | SIMD-0357: Alpenglow VAT implementation | AshwinSekar |
+| STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk | 490  | v4.0.0-beta.3 | v0.903.40004 |  |  |  | SIMD-0490: Upgrade BPF Stake Program to v5.0.0 | 2501babe |
+| vcmrbYbiMVKaq1snKP6eCacNDcr6qZvpCNUjmk6gxvZ | 0340  | v4.0.0-beta.TBD |  |  |  |  | SIMD-0340 validate chained block id | AshwinSekar |
diff --git a/_Sidebar.md b/_Sidebar.md
index 0ce531f..212b4a8 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -15,8 +15,5 @@
   * [Backport Guidelines](Backport-Guidelines)
 * **Schedule**
   * [v4.0 Release Schedule](v4.0-Release-Schedule)
-  * [Agave Transition](Agave-Transition)
-* **Migration**
-  * [Agave v2.0 Migration](Agave-v2.0-Transition-Guide)
 * **Restart Instructions**
   * [2026-01-22 Testnet Restart](2026-01-22-Testnet-Restart)
diff --git a/feature-gate-tracker-schedule.json b/feature-gate-tracker-schedule.json
index 229f03e..8247b6a 100644
--- a/feature-gate-tracker-schedule.json
+++ b/feature-gate-tracker-schedule.json
@@ -4285,9 +4285,7 @@
       ],
       "Testnet Epoch": 907,
       "Title": "SIMD-0194: Deprecate rent exemption threshold"
-    }
-  ],
-  "Pending Mainnet Beta Activation": [
+    },
     {
       "Description": null,
       "Devnet Epoch": 1029,
@@ -4309,7 +4307,9 @@
       ],
       "Testnet Epoch": 909,
       "Title": "SIMD-0332: Reduce ChaCha rounds for Turbine from 20 to 8"
-    },
+    }
+  ],
+  "Pending Mainnet Beta Activation": [
     {
       "Description": null,
       "Devnet Epoch": 1033,
@@ -4375,12 +4375,10 @@
       ],
       "Testnet Epoch": 915,
       "Title": "SIMD-0083: Relax intrabatch account locks"
-    }
-  ],
-  "Pending Devnet Activation": [
+    },
     {
       "Description": null,
-      "Devnet Epoch": null,
+      "Devnet Epoch": 1043,
       "Feature ID": "rexav5eNTUSNT1K2N7cfRjnthwhcP5BC25v2tA4rW4h",
       "Min Agave Versions": [
         "v3.1.7"
@@ -4402,7 +4400,7 @@
     },
     {
       "Description": null,
-      "Devnet Epoch": null,
+      "Devnet Epoch": 1044,
       "Feature ID": "ptokFjwyJtrwCa9Kgo9xoDS59V4QccBGEaRFnRPnSdP",
       "Min Agave Versions": [
         "v3.1.7"
@@ -4423,16 +4421,17 @@
       "Title": "SIMD-0266: Efficient Token program"
     }
   ],
+  "Pending Devnet Activation": null,
   "Pending Testnet Activation": [
     {
       "Description": null,
       "Devnet Epoch": null,
       "Feature ID": "2GCrNXbzmt4xrwdcKS2RdsLzsgu4V5zHAemW57pcHT6a",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4451,10 +4450,10 @@
       "Devnet Epoch": null,
       "Feature ID": "6sPDzwyARRExKH52LECxcGoqziH8G7SZofwuxi8Ja331",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4473,10 +4472,10 @@
       "Devnet Epoch": null,
       "Feature ID": "bn2oPgpkzQPT3tohMaAsMVGjhDmmDa4jCaVPqCFmtxM",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4495,10 +4494,10 @@
       "Devnet Epoch": null,
       "Feature ID": "bn1hKNURMGQaQoEVxahcEAcqiX3NwRs6hgKKNSLeKxH",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4517,10 +4516,10 @@
       "Devnet Epoch": null,
       "Feature ID": "6aHuNsUmwSzCEMjrBzBCYaxHAyAcQBjVES92JigHBDuC",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4534,37 +4533,15 @@
       "Testnet Epoch": "",
       "Title": "SIMD-0406: Maximum instruction accounts"
     },
-    {
-      "Description": null,
-      "Devnet Epoch": null,
-      "Feature ID": "b1sgUiJ3qu7hYm3tNDyyqZNQd6gLGJmJppnLNa93PCQ",
-      "Min Agave Versions": [
-        "v4.0.0"
-      ],
-      "Min FD Versions": [
-        ""
-      ],
-      "Min Jito Versions": [
-        ""
-      ],
-      "Owners": [
-        "samkim-crypto"
-      ],
-      "SIMDs": [
-        "0388"
-      ],
-      "Testnet Epoch": "",
-      "Title": "SIMD-0388: BLS12-381 syscalls"
-    },
     {
       "Description": null,
       "Devnet Epoch": null,
       "Feature ID": "2uxQgtKa2ECHGs67Zdj7dgmzn2w9HiqhdcedwCWfYzzq",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4581,34 +4558,34 @@
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "VATtb1DepUwdPh5bFVasdtkbeDNsftZSRzr2aKpKWJA",
+      "Feature ID": "b1sgUiJ3qu7hYm3tNDyyqZNQd6gLGJmJppnLNa93PCQ",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.2"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "AshwinSekar"
+        "samkim-crypto"
       ],
       "SIMDs": [
-        "0357"
+        "0388"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0357: Alpenglow VAT implementation"
+      "Title": "SIMD-0388: BLS12-381 syscalls"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
       "Feature ID": "zkexuyPRdyTVbZqEAREueqL2xvvoBhRgth9xGSc1tMN",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.902.40002"
       ],
       "Min Jito Versions": [
         ""
@@ -4627,10 +4604,10 @@
       "Devnet Epoch": null,
       "Feature ID": "shredXP8xLjJWp1AWh3gAFsFn4GSH1vohhCMDHw5koU",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.3"
       ],
       "Min FD Versions": [
-        ""
+        "v0.903.40004"
       ],
       "Min Jito Versions": [
         ""
@@ -4647,75 +4624,75 @@
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "vbiddkDHTSHSvL8B21AetWvTBLxxUZ1FmU6DFjztyRn",
+      "Feature ID": "76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.903.40004"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "AshwinSekar"
+        "joncinque"
       ],
       "SIMDs": [
-        "0340"
+        "0249"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0340 validate chained block id"
+      "Title": "SIMD-0249: Delay Commission Updates"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "76dHtohc2s5dR3ahJyBxs7eJJVipFkaPdih9CLgTTb4B",
+      "Feature ID": "VATtb1DepUwdPh5bFVasdtkbeDNsftZSRzr2aKpKWJA",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.0"
       ],
       "Min FD Versions": [
-        ""
+        "v0.903.40004"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "joncinque"
+        "AshwinSekar"
       ],
       "SIMDs": [
-        "0249"
+        "0357"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0249: Delay Commission Updates"
+      "Title": "SIMD-0357: Alpenglow VAT implementation"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "ptrXWLkSDMZZmZN8GAT6W5yW4EvYByfw6cRRHbXwQNS",
+      "Feature ID": "STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.3"
       ],
       "Min FD Versions": [
-        ""
+        "v0.903.40004"
       ],
       "Min Jito Versions": [
         ""
       ],
       "Owners": [
-        "febo"
+        "2501babe"
       ],
       "SIMDs": [
-        "0449"
+        "490"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0449: Direct Account Pointers in Program Input"
+      "Title": "SIMD-0490: Upgrade BPF Stake Program to v5.0.0"
     },
     {
       "Description": null,
       "Devnet Epoch": null,
-      "Feature ID": "STk5Xj8hdAx3sTzmtJ3QysKkq6X2A3yj73JtxttiRyk",
+      "Feature ID": "vcmrbYbiMVKaq1snKP6eCacNDcr6qZvpCNUjmk6gxvZ",
       "Min Agave Versions": [
-        "v4.0.0"
+        "v4.0.0-beta.TBD"
       ],
       "Min FD Versions": [
         ""
@@ -4724,13 +4701,13 @@
         ""
       ],
       "Owners": [
-        "2501babe"
+        "AshwinSekar"
       ],
       "SIMDs": [
-        "490"
+        "0340"
       ],
       "Testnet Epoch": "",
-      "Title": "SIMD-0490: Upgrade BPF Stake Program to v5.0.0"
+      "Title": "SIMD-0340 validate chained block id"
     }
   ]
 }
diff --git a/v4.0-Release-Schedule.md b/v4.0-Release-Schedule.md
index 3119a02..cf675f5 100644
--- a/v4.0-Release-Schedule.md
+++ b/v4.0-Release-Schedule.md
@@ -1,10 +1,11 @@
 This is a tentative schedule for the stabilization and rollout of Agave <VERSION>. It is for informational purposes only, and all dates are subject to change. Please wait for announcements on Discord before performing any upgrades or downgrades.
 
 |Milestone|Target Date|Delivery Date|
-|:--------|:----------|:------------|
+|:--------|:---------:|:-----------:|
 |Create v4.0 branch|2026-03-02|2026-02-26|
 |Update master branch version to v4.1|2026-03-02|2026-02-26|
 |Testnet: Recommend nodes running Agave adopt v4.0|2026-03-09|2026-03-09|
+|Testnet: Activate several remaining v3.1 features|-|2026-03-16|
 |Testnet: Begin v4.0 feature activations|2026-03-16||
 |Devnet: Upgrade to v4.0|2026-03-23||
 |Devnet: Begin v4.0 feature activations|2026-03-30|| 

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