Today, one day before the iOS7 release, Apple updated their Server.app. It does not say anything about supporting any new feature specifically for iOS7 but I suppose there is something under the hood for it. In any case here the official release notes (I’ve highlighted what I believe it is actually new from previous updates) :
What’s New in Version 2.2.2
- Caching Server to speed up download of software distributed by Apple through the Mac App Store.
- Time Machine service monitoring of which computers have backed up, when they last backed up and size of backup.
- Wiki Server support for MacBook Pro with Retina displays.
- Fix for deleting apps uploaded to Profile Manager.
- Ability to use Active Directory groups within Profile Manager.
- Centralized Certificate management interface.
- Fix for administering Profile Manager from iPad mini.
- Support for using bonded or virtual network interfaces in Server.
- Fix for setup failures due to an SSL error.
- Fixes for upgrading from Lion Server.