It appears to be based on a 767-200 design, though the wings appear longer, perhaps to ameliorate the problems that have occurred on the Japanese and Italian 767 tankers,

Additionally, the boom looks to be a significant departure from their last proposal, probably because a higher fuel flow rate is required under the KC-X contract.

Still no word as to whether or not Northrop Grumman/EADS, or just EADS alone, will bid on the program.