I've been waiting to buy a GTX 480 for months and now that we made it to the release date, I don't see any available. I signed up for auto notify weeks ago on EVGA's site and haven't received any notifications. So did it sell out in the blink of an eye or never really launch?
The GTX 470 and 480 officially started selling today - people have them in their home rigs and have started benchmarking. If we are to believe the information about supply shortages, it is entirely possible they could have sold out before any automated notices would have been sent. They aren't expecting a ton of availability until early summer, I believe. I'd imagine a lot of supply was snapped up with preorders. as well.
In any event, the cards are officially on the market - they're just going to be hard to get a hold of for a while. Sorry to hear that you weren't able to grab one today, but keep your eyes open - future shipments should be trickling in constantly from here on out. Good luck!