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PressPass: http://www.microsoft.com/presspass/press/2010/sep10/lyncpr.mspx 

UC Blog: http://blogs.technet.com/b/uc/archive/2010/09/13/introducing-microsoft-lync-the-next-ocs.aspx

Download the release candidate now: http://technet.microsoft.com/en-gb/evalcenter/ff808407.aspx