During TechEd 2012 Orlando, Wally Mead and Mark Florida revealed some of the features that are going to be available on ConfigMgr 2012 SP1

new platforms
Windows 8
Windows 8 tablet – Intel SoC tablets support
Mac OS X
Linux and Unix

Application changes
Support Metro style applications and Deep link applications
Network cost support, which is intelligence support for detecting and controlling/blocking traffic from connections like 3G and 4G networks

Hierarchy changes
You can add a new CAS to an existing stand-alone primary site
Changes in SQL replication
E-mail support for all in console alerts

Software Updates
Fallback support to Windows Update site for content
Endpoint Protection definition updates applied 3 times pr. site
Real-time administrative actions from the console

Changes in Settings Management
User Profile and Data Management
Client Side Caching
Roaming User Profiles
Folder Redirection

Changes in OSD
TPM and PIN support
Used Space BitLocker support

Prestage media support for additional content types
Support for WIM, Applications, Drivers, Package/Programs

PowerShell support
New PowerShell Provider
The scope is to support what-ever feature exposed in the Admin Console

Source: http://blog.coretech.dk/kea/configmgr-2012-sp1-announced-teched-2012/