The HTC HD Mini should have been called the miniHD2 as it’s a downsized HD2. It runs on Windows Mobile 6.5 with HTC Sense UI.
We got a chance to play with this phone at Barcelona and we managed to compare it with the HD2
For more info check out the video belowDespite the Windows Phone 7 announcement Microsoft has confirmed that it does not plan to shelve Windows Mobile.
httpv://www.youtube.com/watch?v=2uiDdTYCgEA