Well it appears that some last minute changes have been made, and Valve Software is not releasing the Steam 2.0 / Counter-Strike 1.6 client this evening after all. Obviously there are a number of leaked clients floating around out there although people arent really having much luck with them.

Steam Beta 2.0 Admission Suspended : The Counter-Strike and Team Fortress communities have maxed out the Steam 2.0 beta servers, resulting in the temporarily suspension of admission to the beta as more content servers are put online. The current Steam content servers offer over 500 megabits of bandwidth, all of which the community is consuming right now. Anyone interested in hosting a Steam content server should email biz@steampowered.com. (Content server requirements can be found at www.steampowered.com Those who have already joined the beta are encouraged to continue their participation and submit their feedback.

The file was never even made official and we were never given the green light to put the client out on Fileshack, you can thank the gaming press for leaking it out early. I suppose if just a leak was enough to max out the servers, an actual official release would have just been ugly.