As you know, Apple has given iOS 6.1 Beta 1, to developers. Well i was one of the lucky ones, and i installed it on my iPhone ASAP!
And the differences i spotted were, the Maps application is now easier to use, and the lockscreen controls have changed.
The slider has a brushed metal finish, and the play/pause/skip icons are spread across the the screen.
In the Maps application, if you want to report a bug, the option for doing so sits front and center and is twice the size of any of the usual “Drop Pin”, “Show Traffic” or “Print” icons.
Let us know if you spot any differences!