According to Foresight News, Polygon has announced that the time lock for its zkEVM mainnet beta upgrade has been triggered, with the lock period set to end on October 28. This update aims to enhance network resilience by introducing rollback features for Polygon zkEVM and CDK chains. Additionally, it will manage the data structures required for blob support through 4844. Users and infrastructure providers are not required to take any action before the smart contract upgrade.