ATI Radeon 4870 to come a bit later
 

RV770XT based GDDR5 cards are barely going to make it for the 25th launch. We've learned from various sources that these cards will reach retailers literally just days, if not hours before the launch.

Radeon HD 4870 cards are being produced as we speak and we were told that there shouldn't be many shortages after the launch date.

http://www.fudzilla.com/index.php?op...47&Ite mid=34