Windows Mobile 6.5, now called Windows Phone is the latest mobile OS revision from Microsoft, and it’s a vast improvement from 6.1
I’ve been using it in Beta form on my Touch HD for about six months courtesy of the folks on XDA-Developers and Miri’s WM6.5 ROM for the Touch HD.
The first thing you notice is the Today screen, now referred to as Titanium. This has been inspired by the Zune interface. The whole thing has designed to be finger friendly and require a stylus as little as possible.