Today's release of Review Board 2.5.15 is a small bug fix release taking care of a problem that came up in last week's release of 2.5.14, along with fixing an annoyance some users have hit when loading diffs in the diff viewer.
In last week's release, we made some changes to the Quick Search field and API for security purposes. One of the changes resulted in a crash that could occur using the API, breaking the Quick Search field in the process. If you were bit by this in 2.5.14, an upgrade should fix this for good.
We also fixed a bug in the diff viewer where attempting to switch diff revisions while still loading diffs would result in a crash and a failure to load the new revision.
It's a pretty small release. As always, release notes are available.