The Inq reports AGEIA has delayed its PhysX Physics Processing Unit (PPU) to the first quarter of 2006.
The main reason for the delay appears to be because as of to date almost no games support this card.
The cards have been ready since May 2005, and we saw one at E3 2005 but apart from a few demos there was no single game that was using this very interesting piece of hardware.
It's very hard to bring the card to the market and expect to change the world without content.
It looks like it will be available in February, or later..