You have a choice between TouchFlo3D or the normal Windows Mobile that you used to.
What you have on it will depend what Apps you like, its like your old PDA / PDA Phone. In other words, almost anything.
iPAQ H2200 (fr Jun04)
Aku1.0/2.0, 2.50.00WWE/1.15.00/1.30.230WWE (A2DP, Apps in ER), HelmiAKU3.5v1.3
Dopod D810 (bought for my other half fr Jun07, now my son)
O2 XDA Flame (fr Jul07, lousy O2/MWG/Arima WM5, cooked good WM6.5WWE Cotulla2)/SE M600i (fr Oct07)
Nokia HS-12W (fr Oct06~Dec07), SE HBH-DS980 (fr Dec07)
HTC Touch HD (bought for my other half fr Jun09)
Samsung Galaxy S i9000 (fr Jun10)