Microsoft has released Update Rollup 4 for Microsoft Dynamics CRM 2011
Microsoft has released Update Rollup 4 for Microsoft Dynamics CRM 2011 Server, Microsoft Dynamics CRM for Microsoft Office Outlook, Microsoft Dynamics CRM 2011 Language Packs, and Microsoft Dynamics CRM 2011 E-mail Router.Update Rollup 4 for Microsoft Dynamics CRM 2011 (KB 2556167)
For more information about this release, see Microsoft Knowledge Base article 2556167:
Update Rollup 4 is available for Microsoft Dynamics CRM 2011
To maintain parity between the application components of Microsoft Dynamics CRM 2011, this update rollup includes packages for Microsoft Dynamics CRM Server, Microsoft Dynamics CRM for Outlook, Microsoft Dynamics CRM Language Packs, and Microsoft Dynamics CRM E-mail Router.