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

Microsoft Lync Server 2010 Standard Edition Deployment Guide

Microsoft has released the Microsoft Lync Server 2010 Standard Edition Deployment Guide - December 2011
Download from here

Microsoft Lync Server 2010 Enterprise Edition Deployment Guide

Microsoft has released the Microsoft Lync Server 2010 Enterprise Edition Deployment Guide - December 2011
Download from here