The last CLT-FCO flight is Oct 26th 2012 and doesn't change to a 767 until Oct 4th, 2012. The last CLT-CDG flight is also Oct 26th 2012 and and it is a 767 from now until then. Aircraft scheduling for mid-2013 is likely in its very preliminary stages. As of now, the return of CLT-FCO and CLT-CDG on March 30, 2013 through the last available scheduling date (July 4, 2013) are both 767s. The downgrades are possibly based on 2012 experiences on the routes, knowing that both of the CLT flights are essentially high connecting services relieving PHL. Although I haven't checked for awhile, the high season US PHL-CDG flights were on a year by year basis frequently oversold all summer. It's possible, that if PHL did not have DL on the CDG route, the US Airways summer traffic would be increased to a point that CLT-CDG could support a 330.
IMO, if US does not merge with AA, they must grow their international route system to stay competitive (alive). The only resource they have to do that for the next 5 years is the 332. Using 2 332s during this next TA off season on CLT-GIG is likely a test to see if they can increase the Yields and divert some TAM NYC connecting passengers to CLT, otherwise it may be a waste of a valuable premium resource. If CLT-GRU gets going, it has the potential to be a top year round performer since GRU has far less connecting and seasonal traffic than GIG. It's unfortunate that Parker didn't bite the bullet several years ago and acquire 3 used 340-300s to get a foothold in Asia with PHL-NRT, instead of wasting time on that absurd PEK route. If US really wanted to do PHL-NRT now, they could do it with a 240T 332 fitted with a larger number of Envoy Suites and portable crew rests in the cargo hold. It would probably not generate great yields because of Cargo limitations, but at least they'd get an Asian presence quickly. I'd be surprised if they haven't, or are, thinking along these lines - absent an AA merger. Other than CLT-GRU (if it happens in 2013), the 5 new 332s will bring the total compliment to 12 by end of 2013. Let's see (May+ 2013) - 2 for PHL-TLV, 1 for PHL-FRA (supplemented by a 1 - 333 and 1- LH 340), 1 for PHL-MAD, 1 for PHL-BCN, 1 for CLT-FRA (supplemented by 1 - 333). That's 6 total (looks like they are going to continue struggling with the PHL-ATH 767). CLT-GIG returns to a 767 on March 30, 2013. 12 - 6 + 1 Spare = 5 Available. Assuming only 2 of the new 5 332s are available by mid year and CLT-GRU is not yet started due to poor slot times, US could reasonably start 1 or 2 new near eastern destinations in 2013 (e.g., IST, CAI, etc..), or possibly add a 2nd TLV flight cycling with 3 aircraft.