Jammedstab- Well the last I saw China cargo were getting rid of all their MD-11's, All of Jades 400's have been parked for most of this year, I don't know what's happening with them now. Air China Cargo have had a quiet year with the 400 and are planning a switch to the 777. You are correct though the switch takes time, particularly because of the ETOPS approvals.
I'm certain cargo and pax 400's will be around for a while, I was just saying that they are beginning to get costly and some are being replaced and parked. It is for this reason that I can't understand how a 200 PAX operation could be successful, however my youth and inexperience has been pointed out to me, so lets hope that I'm wrong.