Microsoft has released Service Pack 1 for Microsoft Dynamics CRM 2013. SP1 contains new updates that improve security, performance, and stability. Additionally, SP1 is a roll up of all previously released updates.
This guide contains comprehensive information about how to plan, install, configure, customize, and maintain Microsoft Dynamics CRM Online and Microsoft Dynamics CRM 2013, updated for CRM Online Spring ‘14 and CRM 2013 Service Pack 1 (on-premises).
Microsoft has released Update Rollup 2. This is a tested, cumulative set of updates for Microsoft Dynamics CRM 2013. It includes performance enhancements that are packaged together for easy deployment.