Update Rollup 4 for Exchange Server 2007 Service Pack 3

Microsoft has released Update Rollup 4 for Exchange Server 2007 Service Pack 3
See info about the update in KB2509911 and download from here

Microsoft Live Meeting 2007 Client Update: May 2011

Microsoft has released v8.0.6362.202 of the Microsoft Live Meeting 2007 client
See info about the Microsoft Live Meeting 2007 Client update here and download from here
See info about Microsoft Live Meeting Conferencing Add-in for Outlook update here and download from 32 or 64 bit

Update Rollup 4 for Exchange Server 2010 Service Pack 1

Microsoft has released Update Rollup 4 for Exchange Server 2010 Service Pack 1
See info about the update in KB2509910 and download from here

Updates for RoundTable: June, 2011

Microsoft released an update for RoundTable firmware v3.5.6362.207
See description in KB2559123 and download from here

Lync Server 2010 VHD

Microsoft released as a pre-configured set of Microsoft Lync Server 2010 VHD's, v1.0
Download from here

Updates for Microsoft Office Communications Server 2007 R2: June, 2011

Microsoft released an update for Microsoft Office Communications Server 2007 R2 v3.5.6907.233
See description in KB2549046 and download from here

Microsoft Office Communications Server 2007 R2 Group Chat: June, 2011

Microsoft released Office Communications Server 2007 R2 Group Chat Server/Client v3.5.6907.233
Se description in KB2549044, KB2549043, and KB2502323 and download from here