GE, PW and RR are investing lots of money to make the GP7200 and the Trent 900 the most efficient, "green" engines in the marketplace for many yrs to come. Existing engines could not meet the requirements. Lots of new materials , electronics and 3d aerodynamics where used to meet the specifications set by Airbus for its A380 versions.
Will the GP7200 and Trent 900 be used on other aircraft then the A380 ?
Candidates could be the 764, a330, B52, C5, 747adv, 7E7, ...
I think A330 should be a serious candidate, A330-500
or 7E7 if "bleedless" would become too expensive / risky or whatever ..