'Left 4 Dead 3' could happen 'down the road'

According to Valve's Chet Falsizek, Left 4 Dead 3 could very well happen, but now for quite some time.

Speaking with Eurogamer, Falsizek was asked on the possibilities of Left 4 Dead 3 happening;
A 3? You know, some time down the road, he theorised, Like anything, I would say that to all of our games. So thats not a promise of when or where. I really love working on that series. Its one of my favourite series. Its just so much fun with the characters and the world. I love zombies and I love horror. So, yeah.
Valve is currently working on incorporating the Steam Workshop into Left 4 Dead on PC.

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