With possibly as many as 12 in the fleet next summer they may start popping up in other European locations. FCO, BCN and CDG seem to get quite a few transfers for EI.
There would still really only be 2 frames free to do Euro services in between. I expect FAO may see some extra flights and free up the A321 in the mornings but that's it. Rome is way to risky to send an A330, they are after getting FCO sorted this summer and I expect they won't go upsetting that. They have at times added a second morning flight out to cope and I think that's more likely than an A330 service.