Microsoft Exchange Server 2007 Service Pack 3

Microsoft has released Exchange Server 2007 Service Pack 3.
Read about it here, and download from here

Microsoft Exchange Server 2010 Update Rollup 4

Microsoft released the Update Rollup 4 for Exchange Server 2010.
See description in KB982639 and download from here

Microsoft Unified Communications Managed API 2.0 SDK

Microsoft released Microsoft Unified Communications Managed API 2.0 SDK v6907.205

Download from here x32 or x64

Microsoft Office Communications Server Netmon Parsers

Microsoft released Office Communications Server Netmon Parsers v3.5, download from here
You can download Microsoft Network Monitor v3.3 here

Microsoft Office Communicator 2007 R2 Help Documentation

Microsoft released the Microsoft Office Communicator 2007 R2 Help Documentation v1.0, you can get it here

Microsoft Office Communicator 2007 Help Documentation

Microsoft released the Microsoft Office Communicator 2007 Help Documentation v1.0, you can get it here

Microsoft Office Communications Server 2007 R2 Web Scheduler v6907.196

Microsoft released a update for Microsoft Office Communications Server 2007 R2 Web Scheduler v6907.196

See description in KB980374 and download from here