I was wandering around Polygon this evening and came across this article. I'm not sure if everyone knows this already but I'll just leave it here.
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Edited by FoMan123: 1/29/2013 1:27:57 AMYep, saw this. I don't care whether they do the reveal before, at, or after GDC, this is sure to be an interesting talk and I hope to be able to watch it!