Well, Valve did say that it will come out, but apparently only the film grain and cosmetic features will. I think that they said that the whole line of sight thing (I think that's what it's called) won't feature.
Motion Blur won't fully take into effect until the hardware can processes it faster than right now. You mean Color Correction/Film Grain that will be release whenever. Well Color Correction is in CS:S right now, go into the video options and you can turn it on.