GLaDOS

She only released the neurotoxins because you incenerated one of her cores.

I'm not sure what you guys are talking about. But I was joking about this image that I thought was fake.

When will this be available in stores

If you mean "Deadly Neurotoxins", they already are. I bought some at Walmart the other day. *wink wink*

If you mean Portal, I don't think it will.
You either download it on PC or on Xbox.
You could find it on Amazon or something though.