Stack Overflow will no longer pin the accepted answer to the top. Other sites can do this either on demand or can opt out if the change is pushed site-wide. The answers would be listed by highest to lowest votes instead.
Edit - 2021-10-07
Based on the vote pattern we have reported back to main meta to confirm The Workplace would like to preserve the current behavior that pins the accepted answer to the top.
Votes at time of confirmation: