Polkadot v0.9.27-1 Release checklist

[github-actions[bot]]

Release Checklist

This is the release checklist for Polkadot v0.9.27-1. All following checks should be completed before publishing a new release of the Polkadot/Kusama/Westend/Rococo runtime or client. The current release candidate can be checked out with git checkout release-v0.9.27-1

Runtime Releases

These checks should be performed on the codebase prior to forking to a release- candidate branch.

• [x] Verify spec_version has been incremented since the last release for any native runtimes from any existing use on public (non-private) networks. If the runtime was published (release or pre-release), either the spec_version or impl must be bumped.
• [x] Verify previously completed migrations are removed for any public (non-private/test) networks.

The following checks can be performed after we have forked off to the release- candidate branch or started an additional release candidate branch (rc-2, rc-3, etc)

• [x] Verify new migrations complete successfully, and the runtime state is correctly updated for any public (non-private/test) networks.
• [ ] Check with the Signer's team to make sure metadata update QR are lined up
• [x] Push runtime upgrade to Westend and verify network stability. => https://github.com/paritytech/devops/issues/1875

All Releases

• [x] Check that a draft release has been created at https://github.com/paritytech/polkadot/releases with relevant release notes
• [x] Ensure that no freenotes were added into the release branch after the latest generated RC

[coderobe]

This is a runtime-only patch release for kusama and westend, based on 0.9.27

[coderobe]

Westend runtime upgrade requested https://github.com/paritytech/devops/issues/1875

[coderobe]

Released as an addendum under the 0.9.27 release (https://github.com/paritytech/polkadot/releases/tag/v0.9.27)