I think it's a common type rating, but don't hold me to that.
Also, don't "expect an order for 269-seat A-340 aircraft." What you can expect to see is the conversion of 2 or 3 of the A330-200 orders to A-340, and the 340's to be replaced by the A350's when they start arriving. That's assuming US gets China authority for 2009 frequencies.
Jim
The A330 and A340 are seperate types, there is a shorter school for someone that is already typed in the A330.