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docs: release-notes-0.21 #10424

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25 changes: 25 additions & 0 deletions docs/release-notes/release-notes-0.21.0.md
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Expand Up @@ -63,6 +63,30 @@

## Deprecations

### ⚠️ **Warning:** The deprecated fee rate option `--sat_per_byte` will be removed in release version **0.22**

The deprecated `--sat_per_byte` option will be fully removed. This flag was
originally deprecated and hidden from the lncli commands in v0.13.0
([PR#4704](https://github.com/lightningnetwork/lnd/pull/4704)). Users should
migrate to the `--sat_per_vbyte` option, which correctly represents fee rates
in terms of virtual bytes (vbytes).

Internally `--sat_per_byte` was treated as sat/vbyte, this meant the option
name was misleading and could result in unintended fee calculations. To avoid
further confusion and to align with ecosystem terminology, the option will be
removed.

The following RPCs will be impacted:

| RPC Method | Messages | Removed Option |
|----------------------|----------------|-------------|
| [`lnrpc.CloseChannel`](https://lightning.engineering/api-docs/api/lnd/lightning/close-channel/) | [`lnrpc.CloseChannelRequest`](https://lightning.engineering/api-docs/api/lnd/lightning/close-channel/#lnrpcclosechannelrequest) | sat_per_byte
| [`lnrpc.OpenChannelSync`](https://lightning.engineering/api-docs/api/lnd/lightning/open-channel-sync/) | [`lnrpc.OpenChannelRequest`](https://lightning.engineering/api-docs/api/lnd/lightning/open-channel-sync/#lnrpcopenchannelrequest) | sat_per_byte
| [`lnrpc.OpenChannel`](https://lightning.engineering/api-docs/api/lnd/lightning/open-channel/) | [`lnrpc.OpenChannelRequest`](https://lightning.engineering/api-docs/api/lnd/lightning/open-channel/#lnrpcopenchannelrequest) | sat_per_byte
| [`lnrpc.SendCoins`](https://lightning.engineering/api-docs/api/lnd/lightning/send-coins/) | [`lnrpc.SendCoinsRequest`](https://lightning.engineering/api-docs/api/lnd/lightning/send-coins/#lnrpcsendcoinsrequest) | sat_per_byte
| [`lnrpc.SendMany`](https://lightning.engineering/api-docs/api/lnd/lightning/send-many/) | [`lnrpc.SendManyRequest`](https://lightning.engineering/api-docs/api/lnd/lightning/send-many/#lnrpcsendmanyrequest) | sat_per_byte
| [`walletrpc.BumpFee`](https://lightning.engineering/api-docs/api/lnd/wallet-kit/bump-fee/) | [`walletrpc.BumpFeeRequest`](walletrpc.BumpFeeRequest) | sat_per_byte

# Technical and Architectural Updates
## BOLT Spec Updates

Expand All @@ -84,3 +108,4 @@
* Elle Mouton
* Mohamed Awnallah
* Nishant Bansal
* Pins
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