This proposal aims to upgrade both Polkadot’s and Statemint’s runtimes to v9291 and v9290 respectively. For this, the proposal includes a batch call including both runtime upgrade proposals.
On Polkadot
This upgrade fixes issues and includes:
Runtime
⏳ pending non-critical audit #11813 Low - Proposal: flatten allpallets and similar types
✅ trivial #12032 Low - Contracts: make chain extension state types public
✅ trivial #11670 Low - Replace t::accountid with <t::lookup as staticlookup>::source
✅ trivial #12059 Low - Revert "auto-incremental collectionid"
✅ trivial #12095 ❗️ Medium - Fix nomination pools pending rewards rpc
#12138 Low - Weight v1.5: opaque struct
✅ audited #12145 Low - Uniques: reset approved account after transfer
✅ trivial #12136 Low - Emit events for inter contract calls
✅ audited #12154 Low - [fix] make sure pool metadata is removed on pool dissolve
Proposal hash: 0x8fe3a4b4214f090c01c1da47882c41eb08e0544d379c7e1959dcdc4810e12c50
On Statemint:
[C] #1454 Low - [feature] add xcm benchmark weights to statemint
[C] #1551 Low - Update cumulus to latest substrate and polkadot master
Among other things, it includes an update to the XCM weight calculations and prepares for the first Collectives parachain.

Please note this is submitted as an external motion: meaning if/after Council approves, this will also be up for vote by the community to decide on the upgrades.
Complete batch call:

Proposal hash: 0xbc2cb73740d701dac3fa5f31b7b23e552d6160ccd40d95746e91c131c699523d
Make sure to vote at your convenience!