According to TechFlow, the Sui mainnet has been upgraded to version V1.22.0, and the Sui protocol has been upgraded to version 42. Other upgrade highlights are as follows:
Provided more precise rounding calculations in the Deepbook accessor function (read-only), which returns Level 2 order book data within a price range.
Added support for serialize-signed-transaction and serialize-unsigned-transaction flags that output transaction bytes instead of transactions for executing sui-client-ptb commands.
Fixed a bug in which 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 module verified.
Added a --module/-m flag to sui-client-bytecode-verify-meter, to verify some module bytecode etc.