doc: add changelog for releasing v0.5.7 (#276)

Co-authored-by: joey <10592664+joeylichang@users.noreply.github.com>

Author: joey0612

CHANGELOG.md

@@ -1,5 +1,31 @@
 # Changelog
 
+## v0.5.7
+
+This release introduces the implementation of [BEP-543](https://github.com/bnb-chain/BEPs/blob/master/BEPs/BEP-543.md), effectively reducing the block time from 1 second to an impressive 500 milliseconds.
+This enhancement significantly improves transaction efficiency and overall network performance, allowing for faster processing and a more seamless experience for users.
+
+It is set to be activated on both the opBNB Mainnet and Testnet environments according to the following schedule:
+
+- Testnet: Apr-02-2025 03:00 AM +UTC
+- Mainnet: Mid-Apr-2025
+
+All mainnet and testnet nodes must upgrade to this release before the hardfork time.
+
+### What's Changed
+
+#### FEATURE
+* [\#269](https://github.com/bnb-chain/op-geth/pull/269) change block internal to 500ms
+* [\#273](https://github.com/bnb-chain/op-geth/pull/273) add millisecond to rpc field
+
+### BUGFIX
+* [\#270](https://github.com/bnb-chain/op-geth/pull/270) concurrent issue of local account set in legacypool
+
+### Docker Images
+ghcr.io/bnb-chain/op-geth:v0.5.7
+
+**Full Changelog**: https://github.com/bnb-chain/op-geth/compare/v0.5.6...v0.5.7
+
 ## v0.5.6
 
 This is a minor release for opBNB Mainnet and Testnet.