When we posted yesterday about video out being leaked for Windows Phone 7 by MarsRogers, the disappointment was that he was not releasing the hack for others, due to endangering his sources.
Something must have changed, as XDA-Dev member ceesheim has now released the full package, including the Windows phone part, the Windows drivers and the desktop client which will receive the video stream. The app will for the first time allow proper screen shots of XNA games on Windows Phone.
The app needs to be cooked into a ROM, as HTC has made some changes to their BIOS which makes it impossible for the USB video out to work, but for many first generation Windows Phones this is no problem.
Read a lot more detail at XDA-Developers here.