Kotaku had a chance to stop by Tripwire Interactive, and have published their preview of the game. Check it out here : http://kotaku.com/5253107/killing-floor-preview-holy-co+op-survival-horror
Also, the windows dedicated server files are ready and up on the HLDS tool. For details and support head to: http://forums.tripwireinteractive.com/forumdisplay.php?f=59