Microsoft Office Communications Server 2007 R2 Group Chat: January 2012

Microsoft released Office Communications Server 2007 R2 Group Chat Server/Client v3.5.6907.244
Se description in KB2647090 and download from here

Updates for Microsoft Office Communications Server 2007 R2: January 2012

Microsoft released an update for Microsoft Office Communications Server 2007 R2 v3.5.6907.244
See description in KB968802 and download from here

Microsoft Office Communicator 2007 R2: January 2012

Microsoft released Office Communicator 2007 R2, v3.5.6907.244
See description in KB2647093 and download from here

Update Rollup 6 for Exchange Server 2007 Service Pack 3

Microsoft has released Update Rollup 6 for Exchange Server 2007 Service Pack 3
See info about the update in KB2608656 and download from here

Microsoft Lync 2010: January 2012

Microsoft released Lync 2010, v4.0.7577.4061
See description in KB2670498 and download from here x86 or x64