It looks like I'm not the only one keen on getting a shiny, new account authenticator. The Blizzard Store is currently marked as "Sold Out" on the product. Tyren posted on the General Discussion forum that it will be several weeks before they will be available for purchase once again.
I believe that those who have placed their orders are still slated to receive them, though I have received no word on my order. I ordered mine Tuesday morning, and the order status is currently sitting as processed. If they follow the shipping schedule in the email, the devices should be sent out at some point tomorrow. I'll give a full review once my token arrives at my doorstep.