I just spent an hour on the phone looking for a Deluxe system preorder...which made me realize, hey, I should start a thread so that we can pool information.
So as of right now, as far as I'm aware, Gamestop has stopped accepting preorders on the Deluxe/Premium SKU, both in stores on online.
BestBuy has stopped online, but is still accepting preorders in stores.
Kmart is accepting preorders online, but is not yet accepting preorders in stores.
And that's what I've got so far. I'm going to stop by Bestbuy later today to get my preorder in there.