These are the new released Lync 2010 cumulative updates and fixes:

Related Posts:

Lync Server Open Interoperability Program OIP http://blogs.technet.com/b/meamcs/archive/2011/01/10/lync-server-open-interoperability-program-oip.aspx

Download Lync Server 2010 Planning Tool: http://blogs.technet.com/b/meamcs/archive/2011/02/10/download-lync-server-2010-planning-tool.aspx

Lync Server 2010 Best Practices Analyzer available for download: http://blogs.technet.com/b/meamcs/archive/2011/02/22/lync-server-2010-best-practices-analyzer-available-for-download.aspx