If you mean the kX WDM drivers (for all Creative/Emu 10k1/10k2 cards), they have matured very much. Mixer and DSP framework works great. ASIO latency goes down to 2.33ms it has 8 stereo / 16 mono playback and recording busses. DSP effects are inserted in a Creamware like patch window (or PD-like... objects and cables ;-)). I have been beta testing them since november.
See www.kxproject.com
/Soeren
actually i know one of the developers from another listserv . but at the time when he mentioned it the WDM drivers didnt have a mixer implemented
yet
... so i refrained .