https://support.microsoft.com/en-us/kb/3074857#/en-us/kb/3074857
One of the most sought after feature is the auto update of the clients after a CU or update has been installed to the infrastructure.
Key points (see the KB abover for more):
- Update version of the Endpoint Protection client
- Task sequence packages are downloaded two times when the "Install software packages according to dynamic variable list" option is selected, and the variable SMSTSPersistContent is set to "False." The package is downloaded one time, deleted, and then downloaded again before the actual installation.
- Fixing of Windows 10 driver import
- Debian 8 is added to the list of supported platforms for software distribution.
- An attempt to create a Microsoft Intune subscription fails when Configuration Manager is installed to the default path or to any path that includes a space in the directory name. Additionally, errors that resemble the following are logged in the SMSDmpDownloader.log
Two Microsoft articles about the CU are now here
http://blogs.technet.com/b/configmgrteam/archive/2015/08/03/now-available_3a00_-cu1-for-configmgr-2012-r2-sp1-configmgr-2012-sp2.aspx
http://blogs.technet.com/b/configmgrteam/archive/2015/08/03/automatically-updating-the-configuration-manager-client.aspx
