They were able to ship both my Mega Sg and Super Nt and a Pocket Dock a few months ago within a few days of each other. I think once they have the stuff in-stock from manufacturing its very quickly in the hands of customers.
From what I did see, people did receive their pockets and some of the accessories, so yeah, it looks like they are actually working through the backlog. That said, I'll believe the Duo when it arrives at my doorstep :D
They're going to have a busy Christmas holiday..