Everything I've gotten is saying all cards at stock, the 290X is on parity with a Titan averaging out multiple results and faster than a 780.
Retailers still have not been given pricing on the cards, which isn't surprising as these BF4 special editions are just hype/limited edition cards.
If AMD wants to do this right they should release stock reference R9 290X for $599. That imo is the best way to generate some thunder, matching Titan, faster than GTX 780 and cheaper than both. Basically take a dump on nvidia the way they did to AMD with the 680 launch.
Obviously nvidia will be dropping prices on 780, who knows what will happen with Titan, that card is just obtuse at this point with the current cards available and 290X coming. But they will still generate good momentum and positive reviews. They have Battlefield 4 locked in with their launch and are going to take the performance lead in that game, Mantle is going to compound that and possibly really make nvidia look bad.
They could have a fierce launch for themselves here similar to 5870. Smaller chip, more efficient, winning the most important game benchmark going in BF4, faster and cheaper.
I think they will go for the $599 on the reference card and all this delaying is just to keep nvidia in the dark and unable to taint their launch with some early price drops.