Valve writer Chet Faliszek recently told Edge magazine that "Before we do anything on the PS3 we need to be able to support it in the right way," Faliszek says. "But we'll look at it, and I'm sure down the road we'll do it."
Given the fact that Valve has released two titles in the Left 4 Dead series in a span of a year, it would seem plausible that the company would find time to release titles on Sony's console. Only time will tell.