Last week I was at the Istanbul airport. I was in the Charter terminal, which was empty except for my charter flight (operated by ATA for Renaissance Cruises). This terminal wasn't very nice! We did see a new sparking terminal when we took the busses to our plane. (the charter terminal doesn't have jetways) We also saw the overloaded current terminal, with many Turkish Airlines planes, in addition to Delta 767 and MD-11, Singapore 777, JAL 747, among others. Someone that we were on the cruise with flew home commerically on Air France, and he said the terminal was complete mayhem. Turkish Airlines and the other airlines definetely need that new terminal!
Fly US Airways
PS: The Renaissance cruise was excellent. I highly recommend it. Can't say many good things about the ATA charter, though!