According to Foresight News, Sui mainnet has been upgraded to version V1.8.1. This upgrade includes adding a zkLogin protocol configuration feature flag for testing in the development network, using updated proof verification logic for zkLogin signature verification; when building Move code, the updated version will have additional linter warnings related to collection comparisons in Sui framework code (Bag, Table, and TableVec); updated error code designation to support a clearer error reporting structure, etc.