In March, Square Enix registered some websites for something called Deus Ex: The Fall. It didn't raise too many eyebrows at the time because, whatever, dummy and decoy websites get made all the time.
But today, only a week out from E3, the official Twitter account of Eidos Montreal - the developers behind Deus Ex: Human Revolution - said this:
Well now. It's been two years since Human Revolution was released, so we're about due to see a follow-up. Exciting.
UPDATE - Now with video.