The 767s, 12 of them, will be hanging around for awhile. Some of them have been redeployed to some domestic flying, such as PIT-LAX, CLT-LAX, PHL-MIA. But, you still see them on European runs such as PHL-MAD, PHL-MUC. And, for the time being, CLT-LGW, CLT-CDG. The A330 will also be assigned to some high density domestic duties, as well.
Personally I'd like to see the 767's (which are actually now 11 since N654US was written off due to an uncontained engine failure in 2000) taken off the Europe routes and replaced with A330's exclusively, but it won't happen anytime soon due to the bad economy, etc.
I don't know if thinner routes like AMS/MUC/MAD could support the big capacity of the A330-300; maybe U could look into the A332 if/when they are ever buying aircraft again.