Notice

This article is being provided as a prerelease notification of changes that are likely to be included with Update Rollup 2 for Microsoft Dynamics CRM 2013 Service Pack 1. The items in this prerelease article are subject to change before the public release of the Update Rollup. When publicly released, this article will be updated to reflect the items that actually were included in the final Update Rollup 2 for Microsoft Dynamics CRM 2013 Service Pack 1 package.

http://support.microsoft.com/kb/2963850

Hope it helps!