Update 1606 for Configuration Manager Technical Preview has been released
Automatically categorize devices into collections:
Device categories can be created to automatically place devices into device collections when ConfigMgr is used with Microsoft Intune. Users are required to choose a device category when they enroll a device in Intune. The category of a device can also be changed in the ConfigMgr console.
Enforcement grace period for required application and software update deployments
Users can set a grace period for required application deployments or software updates that are past the deadline. Useful for machines that have been turned off for a while.
Using Configuration Manager as a managed installer with Device Guard
Device Guard is a feature in Windows 10. ConfigMgr can work with Device Guard so that software deployed from ConfigMgr is automatically trusted
Multiple device management points for On-premises Mobile Device Management
Cloud Proxy Service for managing clients on the Internet
New feature to manage ConfigMgr clients on the Internet. The service is deployed to Azure and connects your on-premises ConfigMgr infrastrucutre using the cloud proxy connector point (new role). It currently supports the management point, distribution point and software update point roles.
Manage the Office 365 client agent in Configuration Manager
Instead of using Group Policiy setting, you can configure a ConfigMgr client agent setting to enable Office 365 clients to receive updates from ConfigMgr.
The OSDPreserveDriveLetter task sequence variable has been deprecated
Windows Setup now determines the best drive letter to use (typically C:). You can still change the drive letter location in Apply Operating System task sequence step.
Changes for the Updates and Servicing Node
For more info: https://technet.microsoft.com/en-us/library/mt732696.aspx