This is a full release for Acala & Karura that upgrades Substrate/Polkadot/Cumulus version to v0.9.31 and implemented sanity checks for some parameter updates.
Release Note: https://github.com/AcalaNetwork/Acala/releases/tag/2.11.0
https://acala.subscan.io/referenda/52
https://acala.subsquare.io/democracy/referendum/52