Likely because they only had 20 of them, and now they are all waiting for UPS trucks to take them away. Hopefully some more brands get released soon, now i just need to save up to get a new monitor so it will break idle when i finally get one of them.
Oh and looking at the SP count and clock rate, i cant wait to see the reviews! Its easily more than twice as fast as a 4870. CPU bottlenecks on an i7 here we come!!!