Pocketnow has been slipped a developer guide to Windows Mobile 7, and the goal very much seems to be to bring the framework and API set right up to and beyond Mobile OSX.
They list a number of points from the documentation:
1) SmartSearch is included, which is a system wide search capability. "SmartSearch is a user interface that puts the application into a touch screen-enabled dialling mode and invokes a context-sensitive search based on the Association Engine. Applications can bring SmartSearch to the foreground, selecting which page to display (for example, the Contacts page), and optionally add a contextual data set to the selected page during the Smartsearch session."
2) Camera APIs: The WM7 camera API will offer overlays, video capture, EXIF, etc
3) Office Mobile is upgraded to better support SharePoint, better round trip, charts, etc.
4) Multi-touch support.
5) There is no longer a suspend/resume power model. Its always on.
6) Association Engine. A new extensible macro environment that will allow applications to create functions for others to access.
7) The menu system is completely redone.
8 ) Cron jobs. You can now set task scheduling.
9) Pocket Outlook Object Model (POOM) now supports multiple folders – i.e. right now you only can have one Contacts folder. In WM7 you can have many. Same for calendars, tasks. You can also have multiple data stores.
10) POOM now handles Mail and note items. That seems to indicate that Notes are now a data store and not just files.
11) Built-in XML – finally.
Read more of the information at Pocketnow.com.