Items of interest: (click on the link for additional details)
6.4
Our new built-in announcement banner
An update to Git LFS file locking
Read more in the Bitbucket Server 6.4 release notes.
6.3
Avoid conflicts with Git LFS file locking
Compare commits
Read more in the Bitbucket Server 6.3 release notes.
6.2
Add repository descriptions
See Absolute timestamps
View SVG source code
Delete confirmation check
Customize your support link
Read more in the Bitbucket Server 6.2 release notes.
6.1
Our new built-in commit graph
Read more in the Bitbucket Server 6.1 release notes.
6.0
Add additional storage for your repository data
Read more in the Bitbucket Server 6.0 release notes.