I’ve got 2.81 installed and working (auto-updated previously). WordPress admin page is telling me to update to 2.82 & showing release notes. I click update, it says installed but then when I go back to the page later it’s still on 2.81 and saying to update! Other plugins all seem to have updated OK.
This appears to be an issue with WordPress.org, we are currently working with them to resolve and will update this support thread when the issue is resolved.