Update Rollup 13 has been released for Microsoft Dynamics CRM 2011 On Premise.  One of the major items is the added support for Windows Server 2012 as well as AD FS 2.1 (Active Directory Federation Services).  The ability to install CRM 2011 on Windows Server 2012 is being patched in as a Self-Healing Setup file.  This file will be available when the Update Rollup is put on Microsoft Update.  Update Rollup 13 is scheduled for release on Microsoft Update in late April at this point.  Also, the Report Authoring Extensions have been updated to support SQL server Data Tools and Visual Studio 2010.  For a full list of resolved issues with this rollup please see the Update Rollup 13 KB that has all of them listed as well as information on install of the Rollup.  Below are the links for all of these items:

Information

Update Rollup 13 for Microsoft Dynamics CRM 2011 (KB 2791312):

http://www.microsoft.com/en-us/download/details.aspx?id=37133

 

Update Rollup 13 for Microsoft Dynamics CRM 2011 is available:

http://support.microsoft.com/kb/2791312

 

Windows 2012 and AD FS 2.1

Microsoft Dynamics CRM Compatibility List:

http://support.microsoft.com/kb/2669061

 

Configuring AD FS 2.1 with Microsoft Dynamics CRM 2011:

http://support.microsoft.com/kb/2828015

 

Microsoft Dynamics CRM 2011 Report Authoring Extension (with SQL Server Data Tools support):

http://www.microsoft.com/en-us/download/details.aspx?id=27823