According to Foresight News, the Sui mainnet has been upgraded to version V1.22.0, and the Sui protocol has advanced to version 42. The key points of this upgrade include more precise rounding calculations provided in the Deepbook accessor function (read-only), added support for serialize-signed-transaction and serialize-unsigned-transaction flags, and the correction of an error. The error was that the sui client verify-bytecode-meter incorrectly returned the tick used by the last function to be verified as the tick used by the last verified module. Additionally, elliptical curve (EC) operations have been enabled in Move.