I had heard that these 400's were new ones from the factory.... don't know if it's the SC or WA factory..... and that the can issue was already addressed since it's a new jet right off the production line. I had heard no dual type rating, a max cargo weight of 110K lbs, and they are not the ER version.
Apparently, the tooling and dyes are available immediately because of the new USAF tanker which is based on the 767. Hence, Boeing can gin up the production line and build x number of them before they have to start producing them for the USAF.
At least that's what the bus driver on bus #363 said last week.... oh and one of the jumpseat lady's said that the 330 had the same wingspan as the 777 and that it would not physically fit on some of our domestic ramps.