Merge pull request #2972 from zk-Lumi/master

anegg0 · web-flow · commit 8d878d7fac47 · 2025-12-30T15:43:08.000-08:00
update: add arbos51 mainnet notice and update arbos51 description
diff --git a/docs/notices/arbos51-arbsepolia-upgrade-notice.mdx b/docs/notices/arbos51-arbsepolia-upgrade-notice.mdx
diff --git a/docs/notices/arbos51-upgrade-notice.mdx b/docs/notices/arbos51-upgrade-notice.mdx
@@ -0,0 +1,34 @@
+---
+title: 'Upgrade notice for ArbOS 51'
+description: Upgrade notices for ArbOS 51 activation on Arbitrum One, Arbitrum Nova, and Arbitrum Spolia
+user_story: As an Arbitrum node operator, I want to keep my nodes in sync with Arbitrum One, Arbitrum Nova, and Arbitrum Sepolia after the ArbOS 51 activation.
+content_type: notice
+---
+
+[ArbOS 51 "Dia"](docs/run-arbitrum-node/arbos-releases/arbos51.mdx) will be activated on the Arbitrum Sepolia, Arbitrum One, and Arbitrum Nova chains.
+
+## Actions required for node operators
+
+:::warning Action required
+
+Arbitrum node operators **must upgrade** to Nitro **`v3.9.3`** ahead of ArbOS 51 activation to continue syncing the chain.
+
+- **Docker image:** `offchainlabs/nitro-node:v3.9.3-8bc5554`
+- **Release notes:** https://github.com/OffchainLabs/nitro/releases/tag/v3.9.3
+
+:::
+
+## Important dates
+
+The following dates are relevant for Arbitrum chain operators.
+
+| Date                          | Network upgrade                       | Affected audience                    |
+| ----------------------------- | ------------------------------------- | ------------------------------------ |
+| `Dec 1st 2025, 17:00:00 UTC`  | Arbitrum Sepolia upgrade to ArbOS 51  | Node operators for Arbitrum Sepolia  |
+| `Jan 8th, 2026, 17:00:00 UTC` | Arbitrum One/Nova upgrade to ArbOS 51 | Node operators for Arbitrum One/Nova |
+
+## Context
+
+[ArbOS 51 "Dia"](docs/run-arbitrum-node/arbos-releases/arbos51.mdx) builds upon [ArbOS 40 "Callisto"](docs/run-arbitrum-node/arbos-releases/arbos40.mdx) with support for the relevant EVM changes that are a part of Ethereum's [Fusaka upgrade](https://ethereum.org/en/roadmap/fusaka/), as well as additional improvements to the gas pricing algorithm, a change to the min L2 base fee, `MaxTxGasLimit` allowing full block utilization, changes to instrument Nitro’s State Transition Function (STF) to price gas based on specific resource usage, native token mint/burn capabilities, and a few bug fixes.
+
+Upstream governance items ([ArbOS 50](https://snapshot.box/#/s:arbitrumfoundation.eth/proposal/0x33754da4006d0ef38666ec5d5e85fd0966a891a594ab9dc21f23beedea2d330b) + [Gas Target & Pricing Framework](https://snapshot.box/#/s:arbitrumfoundation.eth/proposal/0x4a96a91d162975de0d402b83ca8b8a24e808ca357150120fc0d44ae0bf1cc4a5)) were bundled into a single [ArbOS 51 on-chain vote](https://www.tally.xyz/gov/arbitrum/proposal/53154361738756237993090798888616593723057470462495169047773178676976253908001?govId=eip155:42161:0xf07DeD9dC292157749B6Fd268E37DF6EA38395B9). Both components have passed Snapshot temperature checks, and the bundled Tally vote was passed **December 18, 2025**.
diff --git a/docs/notices/fusaka-upgrade-notice.mdx b/docs/notices/fusaka-upgrade-notice.mdx
@@ -21,13 +21,13 @@ The Fusaka upgrade introduces several breaking changes. Review [EIP-7607](https:
 
 The following dates are relevant for Arbitrum chain operators.
 
-| Date                                     | Network upgrade                                                                            | Affected audience                                                                              |
-| ---------------------------------------- | ------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------- |
-| `Nov 20th 2025, 17:00:00 UTC`            | Arbitrum Sepolia upgrade to ArbOS 50                                                       | Node operators for Arbitrum Sepolia                                                            |
-| `Dec 1st 2025, 17:00:00 UTC`             | Arbitrum Sepolia upgrade to [ArbOS 51](docs/run-arbitrum-node/arbos-releases/arbos51.mdx)  | Node operators for Arbitrum Sepolia                                                            |
-| `Jan 8th, 2026, 17:00:00 UTC (proposed)` | Arbitrum One/Nova upgrade to [ArbOS 51](docs/run-arbitrum-node/arbos-releases/arbos51.mdx) | Node operators for Arbitrum One/Nova                                                           |
-| `Oct 14th 2025, 07:36:00 UTC`            | Ethereum Sepolia Fusaka hard fork                                                          | Node operators for Arbitrum chains settling on Ethereum Sepolia (Orbit L2s, Arbitrum Sepolia)  |
-| `Dec 3rd 2025, 21:49:11 UTC`             | Ethereum Mainnet Fusaka hard fork                                                          | Node operators for Arbitrum chains settling on Ethereum Mainnet (Orbit L2s, Arbitrum One/Nova) |
+| Date                          | Network upgrade                                                                            | Affected audience                                                                              |
+| ----------------------------- | ------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------- |
+| `Nov 20th 2025, 17:00:00 UTC` | Arbitrum Sepolia upgrade to ArbOS 50                                                       | Node operators for Arbitrum Sepolia                                                            |
+| `Dec 1st 2025, 17:00:00 UTC`  | Arbitrum Sepolia upgrade to [ArbOS 51](docs/run-arbitrum-node/arbos-releases/arbos51.mdx)  | Node operators for Arbitrum Sepolia                                                            |
+| `Jan 8th, 2026, 17:00:00 UTC` | Arbitrum One/Nova upgrade to [ArbOS 51](docs/run-arbitrum-node/arbos-releases/arbos51.mdx) | Node operators for Arbitrum One/Nova                                                           |
+| `Oct 14th 2025, 07:36:00 UTC` | Ethereum Sepolia Fusaka hard fork                                                          | Node operators for Arbitrum chains settling on Ethereum Sepolia (Orbit L2s, Arbitrum Sepolia)  |
+| `Dec 3rd 2025, 21:49:11 UTC`  | Ethereum Mainnet Fusaka hard fork                                                          | Node operators for Arbitrum chains settling on Ethereum Mainnet (Orbit L2s, Arbitrum One/Nova) |
 
 ## For node operators
 
diff --git a/docs/run-arbitrum-node/arbos-releases/arbos51.mdx b/docs/run-arbitrum-node/arbos-releases/arbos51.mdx
@@ -41,7 +41,7 @@ As a refresher, ArbOS upgrades get treated as Arbitrum's equivalent of a hard fo
 
 ### High-level description of ArbOS 51 changes
 
-ArbOS 51 Dia is an upgrade to support the relevant EVM changes that are a part of Ethereum's [Fusaka upgrade](https://ethereum.org/en/roadmap/fusaka/). Ethereum's mainnet upgrade to Fusaka was completed on [December 3, 2025 at epoch `411392`](https://notes.ethereum.org/@bbusa/fusaka-bpo-timeline). As a result, the majority of the ArbOS-specific changes revolve around implementing the relevant [Fusaka EIPs](https://eips.ethereum.org/EIPS/eip-7607) on <a data-quicklook-from="arbitrum-chains">Arbitrum Chains</a>.
+ArbOS 51 Dia is an upgrade for <a data-quicklook-from="arbitrum-chains">Arbitrum Chains</a> to support the relevant EVM changes that are a part of Ethereum's [Fusaka upgrade](https://ethereum.org/en/roadmap/fusaka/), as well as additional improvements to the gas pricing algorithm, `MaxTxGasLimit` allowing full block utilization, changes to instrument gas based on specific resource usage, native token mint/burn capabilities, and a few bug fixes. Ethereum's mainnet upgrade to Fusaka was completed on [December 3, 2025 at epoch `411392`](https://notes.ethereum.org/@bbusa/fusaka-bpo-timeline).
 
 Here's the list of all changes included in ArbOS 51 Dia:
 
diff --git a/sidebars.js b/sidebars.js
@@ -97,7 +97,7 @@ const sidebars = {
     {
       type: 'link',
       label: 'Notices',
-      href: '/notices/arbos51-arbsepolia-upgrade-notice',
+      href: '/notices/arbos51-upgrade-notice',
     },
     {
       type: 'doc',
@@ -1528,13 +1528,13 @@ const sidebars = {
   noticeSidebar: [
     {
       type: 'doc',
-      id: 'notices/fusaka-upgrade-notice',
-      label: 'Upgrade for the Fusaka transition',
+      id: 'notices/arbos51-upgrade-notice',
+      label: 'Upgrade notice for ArbOS 51',
     },
     {
       type: 'doc',
-      id: 'notices/arbos51-arbsepolia-upgrade-notice',
-      label: 'Upgrade for ArbOS 51 on ArbSepolia',
+      id: 'notices/fusaka-upgrade-notice',
+      label: 'Upgrade for the Fusaka transition',
     },
   ],
 };
diff --git a/vercel.json b/vercel.json
@@ -1488,14 +1488,19 @@
     },
     {
       "source": "/(notices/arbos-50/?)",
-      "destination": "/notices/arbos51-arbsepolia-upgrade-notice",
+      "destination": "/notices/arbos51-upgrade-notice",
       "permanent": false
     },
     {
       "source": "/(notices/arbos-fusaka/?)",
       "destination": "/notices/fusaka-upgrade-notice",
       "permanent": false
     },
+    {
+      "source": "/(notices/arbos51-arbsepolia-upgrade-notice/?)",
+      "destination": "/notices/arbos51-upgrade-notice",
+      "permanent": false
+    },
     {
       "source": "/(precompiles/?)",
       "destination": "/build-decentralized-apps/precompiles/reference",
