The issue of why Airbus has not offered a "NG" ETOPS twin to succeed their A310-300 which competed with reasonable success against the 767 has also crossed my mind. Even before European airlines accepted the concept of trans-Atlantic twins, the A310-300 competed with reasonable success against the 767 at a time when, in contrast to their European competitors, U.S. airlines were putting 767s into service on their North Atlantic routes as fast as Boeing could deliver the ETOPS twins.
The reason must be as TransSwede notes in Reply 2 and/or it may also be a case of little or no market for an ETOPS twin in the 200-225 seat capacity range. Demand for new 767-200/-300/-400s is virtually non-existent as well. Perhaps the airlines have decided that the A330 and 777 will be the smallest types they will use on their longhaul services, especially as the proliferation of codeshares and alliances has meant increasing emphasis on hub-and-spoke operations on both sides of the Atlantic and less point-to-point service for which the 767 and A310 were ideal.
A look at the trans-Atlantic networks of AA
, for example, clearly shows a declining number of points in Europe served non-stop from the U.S. and increased reliance on connections through the hubs of their European partners LX
, respectively. At the same time, I see fewer and fewer 767s traversing the Atlantic for the U.S. Big Three and more and more 777s.