Where can I find the Polymesh release notes?

Release notes for the Polymesh blockchain are hosted on the Polymesh Blog and on the Polymesh GitHub.

Direct links to the latest release notes are here:

• Version 5.3
• Version 5.4
• Version 6.0
• Version 6.1.0
• Version 6.2.0
• Version 6.3.0
• Version 7.0.0