It is official – an update has finally been released for Lync Server 2013! The update is effectively 8 months in the making so don’t let the small build increment fool you (although one could argue a few hundred rounds is far from insignificant).

Nearly half of all components are updated with this patch – even Windows Fabric – on Front-end servers and all components on the Edge, but no new features are called out as this is a bug fix/stabilization patch. A database update is required (CMS does not), so do not forget to update with the typical Install-CsDatabase commands after upgrading the FE pool servers. We discuss over and over how to check upgrade readiness as well the database upgrade methods so if you are unclear, review previous posts here.

Additional Notes: 
Lync Server 2010 build number is 4.0.7577.230
Lync 2010 Client build number is 4.0.7577.4445
Lync Server 2013 build number is 5.0.8308.738
Lync 2013 Client build number is 15.0.4605.1003

Lync Group Chat build number is 4.0.7577. 4409
Lync Group Chat Server build number 4.0.7577.4409
Lync Group Chat Admin build number 4.0.7577.4409

Lync Attendee build number is 4.0.7577.4356
Lync Attendant build number is 4.0.7577.4098
Lync Phone Editions build number is 4.0.7577.4450

Lync 2010 for Windows Phone build number 4.3.8120.0
Lync 2010 for iPhone build number 4.7
Lync 2010 for iPad build number 4.7
Lync 2010 for Android build number 4.0.6509.3001

Lync 2013 for Windows Phone build number 5.4.1087.0
Lync 2013 for iPad build number 5.4
Lync 2013 for iPhone build number 5.4
Lync 2013 for Android build number 5.3.1100

Lync Basic 2013 build number is 15.0.4420.1017
Lync VDI 2013 build number is 15.0.4420.1017