What you see above is reportedly a comparison between Windows Mobile 6.5 and Windows Mobile 7 with 6.5 on the top, and 7 on the bottom.

As you can see, even though Windows Mobile 6.5 has just hit the scene Windows Mobile 7 makes it look extremely dated. However, this is to be expected considering Windows Mobile 7 is a complete remake of the operating system as opposed to just an update as 6.5 was.

via wmexperts