5.4.0b22 is available

Greetings Testers!

Release notes are available here:

http://unity3d.com/unity/beta

As usual the release notes are provided as both delta/differential and in full.
Also, links to the issue tracker are provided where available.

Docs are available online at http://docs.unity3d.com/540/Documentation/Manual/
(though note that they are updated at a different rate from the release)

Please remember to back up your projects before opening them in the beta build.