For those of you that have pre-ordered these from your local pushers...I just spoke to Intermountain customer service on the phone about an un-related parts inquiry and I was told that the parts people are currently busy testing the new AC-12's that had arrived. I would expect that they will begin to ship to dealers very soon.
Edit:
After seeing Erik and Tom's posts below, I must add that she didn't distinguish between N and HO, I foolishly assumed since my inquiry was for N Scale parts, that she would only have told me what she did if they were N Scale...but again that was an assumption on my part. :-[