Lync Server 2010 Jul 2011 CU was released. Below is the detail information.

Server side

2575870 Description of the cumulative update for Lync Server 2010, Conferencing Server: July 2011

2575871 Description of the cumulative update for Lync Server 2010, Web Conferencing Server: July 2011

2575872 Description of the update package for Lync Server 2010, Conferencing Attendant: July 2011

2571505 Description of the cumulative update for Lync Server 2010, Unified Communications Managed API 3.0 Runtime: July 2011

2571550 Description of the update for Lync Server 2010 Group Chat: July 2011

2571547 Description of the update package for Lync Server 2010, Web Components Server: July 2011

2571546 Description of the cumulative update for Lync Server 2010: July 2011

2571545 Description of the cumulative update for Lync Server 2010, Core Components: July 2011

 Client side

2571543 Description of the cumulative update package for Lync 2010: July 2011

 

Note: For the Update version information for each CU, please refer to the follow link:

http://blogs.technet.com/b/hot/archive/2012/09/24/update-version-information-for-lync-server-2010.aspx