The CRM 2011 Update Rollup 13 (UR13) release is now available on the Download Center at http://www.microsoft.com/en-us/download/details.aspx?id=37133. UR13 will be available on Microsoft Update on April 9th.
Also see and download rollup`s list here.
Microsoft Dynamics CRM Builds &News Blog for Online, 2011, 4.0, 3.0 v.
