This proposal aims to upgrade Polkadot runtime to version 0.9.20:

Release notes, runtime changes and proposal hash can be found HERE. On the runtime side, you can check the changes in the link above. Other improvements on the client side for this release include a PR aiming to reduce bandwidth to improve parachain block times, in response to the issues described on this post

• Call hash for Polkadot upgrade: 0xf94667fb9411092c1c0b2f157021ff871d92c60becfe8cd467a16e6d6ccf4a92

Feel free to use srtool yourself to check the proposal hash. If passed by the Council, this proposal should be voted by the community and enacted after. Make sure to vote at your convenience!