Jaxbot’s WP7 Theme is a stand-alone app for Winmo 6.x devices.
It emulates the interface of Windows Phone 7 Series devices.

Current version: 1.13b
-Me hub – Update Facebook status tagged with “through Windows Phone 7 Series”
-People hub – favorites, all contacts, and recent Facebook activity
-Three application launch buttons for phone, Outlook, and Texts
-APi-Application launcher
-Bing search
-Unlock screen with texts, appointments, clock, etc
-Lots of animations
-Treats!

Download
Windows Phone 7 Theme for WM 6.x