They are on their way to US right now. But we are not in charge of shipping and I don't know how fast they will be there and how long customs will take. So I cannot promise you that they will be available before Christmas. But for sure they will be there in January at latest.
So I don't know if this was an oversight or not, but I preordered it the other day through coolstuffinc, but had to make a change to my order (separate from GT:ABE), so I got an e-mail from their customer service that said they'd be shipping my order today! So maybe that was a mistake, but it could also mean they just got the expansions in.