I'm in the same boat. Both of my orders were cancelled, and the holds were taken off of my credit card (after four days, which is ridiculous).
I was told in an email from MC that I'm "on a list" and will be notified if they can obtain more at that price. I pressed for more details (How likely is that to happen? Will it for sure be the same price? Would they automatically renew my order, or will I just be given the option to place a whole new order? etc.). Not surprisingly, all of my questions were dodged in the reply that I got back, everything just blanketed with "it depends on our buyer's conversation with the manufacturer."
Honestly, I don't think it's going to happen. I would imagine they'd know by now if there was going to be another shipment to satisfy these orders. These vague, slippery answers ("You're on a list," "It all depends on the manufacturer"...) are just their way of trying to wiggle free from those of us with cancelled orders, without much fuss.
Edit:
Exactly.