That's a wrap, people. Review Board 1.6 is done, and ready to be installed.
1.6 is a major release, which focuses on better review workflows, faster reviews, access control, generic file attachments, speed improvements, and much, much more. The entire list of features are covered in our release notes.
Before upgrading, we recommend that you back up your database and your site directory, in case anything goes wrong. If you do have problems, you can reach us on our mailing list.
From here on out, we'll be focusing on Review Board 1.6.x releases alongside the upcoming 2.0 release, which will feature support for using third party extensions.
Note: If you're staying with Review Board 1.5.x releases, you will need to be careful how you upgrade to new 1.5.x releases. Instead of the usual:
$easy_install -U ReviewBoard
You will need to do:
$ easy_install -U ReviewBoard==version
Where version would be 1.5.6 or whatever version you're upgrading to. Otherwise, you will end up upgrading to Review Board 1.6.
Again, let us know if you hit any issues. A lot has changed in this release, and we'll probably be shaking out a few bugs with the new features over the next few point releases.