Microsoft Exchange Server 2010 SP2 Help

Microsoft released the Microsoft Exchange Server 2010 SP2 Help file - May 2012.
You can get it here

Microsoft Lync Server 2010 Resource Kit Tools

Microsoft released an update for the Microsoft Lync Server 2010 Resource Kit Tools, v4.0.7577.197
Download from here

Microsoft CSContactImporter

Microsoft has released the CSContactImporter Tool, v1.0
You can get it here

Microsoft Lync for Mac 2011: April 2012

Microsoft released Microsoft Lync for Mac 2011 v14.0.2
See description in KB2690036 and download from here

Update Rollup 7 for Exchange Server 2007 Service Pack 3

Microsoft has released Update Rollup 7 for Exchange Server 2007 Service Pack 3
See info about the update in KB2655203 and download from here

Update Rollup 2 for Exchange Server 2010 Service Pack 2

Microsoft has released Update Rollup 2 for Exchange Server 2010 Service Pack 2
See info about the update in KB2661854 and download from here

Updates for Microsoft Office Communications Server 2007 R2: April 2012

Microsoft released an update for Microsoft Office Communications Server 2007 R2 v3.5.6907.250
See description in KB968802 and download from here