Microsoft has release CU5 for Lync 2010

Last week Microsoft quietly released CU5 for Lync 2010. The list of the various updates may be found below and the update includes a patch for mobility (if mobility is configured and deployed). I have installed the updates without any issue although the pool servers did require a reboot.

UPDATE: Lync Client and Server patches have been updated March 29th - the links below reflect the most current updates.

Product	KB Link	Download
Lync 2010 (64bit)	2684739	MS download
Lync 2010 (32bit)	2684739	MS download
Lync Sever 2010	2493736	MS download
Lync 2010 Phone Edition (Tanjay)	2670373	MS download
Lync 2010 Phone Edition (Aries-Aastra)	2672352	MS download
Lync 2010 Phone Edition (Aries-Polycom)	2672349	MS download
Lync 2010 Phone Edition (Hewlett-Packard)	2672743	MS download
Lync 2010 Attendee (Admin Install)	2500438	MS download
Lync 2010 Attendee (User mode install)	2500440	MS download
Lync 2010 Attendant (32 & 64 bit are a combined patch)	2496326	MS download
Lync 2010 Group Chat Client	2672325	MS download
Lync 2010 Group Chat Server	2670342	MS download
Lync 2010 Group Chat Admin	2672318	MS download

Additional Notes:

Lync Server 2010 build number is 4.0.7577.197
Lync Client build number is 4.0.7577.4087
Lync Group Chat build number is 4.0.7577.4071
Lync Attendee build number is 4.0.7577.254
Lync Attendant build number is 4.0.7577.253
Lync Phone Editions build number is 4.0.7577.4066