Just saw it in passing on the avionics intel site. The quick impression was that there’s better engines (power and fuel economy), and models for the Army. Also, it seems not to be named v-22 osprey anymore but v-280 Valor. Seems to be the same plane, though.
http://www.avionics-intelligence.com/articles/2013/10/ge-bell-valor.html
There was a lot of compromise built in the V-22 because of the requirement to fold up while shipboard.
Take away the requirement to fold up, and you can have larger rotor discs for lower disc loading (reducing the envelope for vortex ring state, the pilot error condition that killed all those Marines,) and a much lighter airframe that doesn't have to pivot the wing which allows for much higher performance.