An updated version of this Fan Control has been released. (May 2010)
Lamptron FC-6- 20 Watts Per Channel 4 Channel Mulit-Color Fan Controller - Black Products Model: FC-6-BK [FC-6-BK] : Performance-PCs.com, ... sleeve it and they will come 
Details can be found on the Lamptron page.
Lamp Electronics
It looks as though they've changed the LCD, but I can't tell much beyond that.
I'll be looking into getting this for my HAF X Mod