Odaily Planet Daily News Merlin Chain Yu X said that it will upgrade the mainnet at 15:00 today, which is expected to last for 12 hours. Block generation will be suspended during the upgrade, and the cross-chain bridge and Particle wallet will not be available. The upgrade includes: upgrading the Polygon CDK version from fork5 to fork8; improving the performance of AA wallet transactions; optimizing the efficiency of external node data synchronization, etc.