Hurray, the long anticipated Cumulative Update is out. You can download it here: http://www.microsoft.com/download/en/details.aspx?id=11551 Of course, I would recommend to use LyncServerUpdateInstaller.exe, unless you have special reason to omit some role update.
Description of the fixes can be found here: http://support.microsoft.com/?kbid=2493736
Now, was I disappointed Mobility was not included in this package – not really. I do believe, however, that Cumulative Update 4 introduces the changes necessary to support mobility. I am facing the fact Mobility is not yet available philosophically – “It will be ready when it is ready”.
Lync is now an enterprise grade system and we should no longer expect something that will require “fixing” right away. Like I always said “Patience is a virtue” ...especially when comes to dial tone...