The masses will find the Radeon release much more relevant however, considering the HD 4850 is a $200 part, opposed to the new GeForce price tags of $400+ for the lesser part and up to $650 for the flagship, single-GPU product.
You'll also be happy to learn that retailers are carrying the new Radeons already. Most notably Newegg is carrying numerous brands selling at the suggested retail price of $199.99. Definitely not bad for a card that performs like a (formerly) much more expensive GeForce 9800 GTX:
See more preliminary benchmarks here - our full review is coming up next week. Admittedly, we were also caught in the dark with the early release situation, in the meantime, enjoy.