I doubt that that would happen, considering AMD's current situation with their finances and sales. To be honest, I think they need this presentation to go ahead in order to get back the confidence of their investors. I'm sure they've cooked up quite something in the forms of R600 and Barcelona, but as things are, they can't delay things anymore. Its pretty much an all or nothing situation for AMD, and they have a lot to lose if they mess up (such as their market share that they managed to claw from Intel during the Prescott days). I'm sure they won't go bust if they don't make it, but they would be left in a position where they won't be able to keep up with Intel for a while, and may be forced to sell some of their divisions (including the newly acquired ATI), even getting bought by some other company (though if it were IBM, then it could actually be for the better, but that's a big if).
Lastly, I think this may be more of a calculated move for AMD rather than the desperate actions they've taken to keep their finances together. Releasing a load of different products within a tight time frame seems too much like a planned move rather than an act of desperation, so overall it could be the turn of the tide for AMD if they pull it off.