Note: Some article links may not be available at the time of this post’s publication. Updated Exchange 2013 documentation, including Release Notes, will be available on TechNet soon.
In addition to the customer reported fixes in Cumulative Update 3, the following new enhancements and improvements to existing functionality have also been added for Exchange Server 2013 customers:
Usability improvements when adding members to new and existing groups in the Exchange Administration Console
Online RMS available for use by non-cloud based Exchange deployments
Improved admin audit log experience
Windows 8.1/IE11 no longer require the use of OWA Light