The new Deus Ex, currently in development at Eidos Montreal, was revealed to the public back in November 2007 and not much has been said about it since. Aside from the trailer that accompanied that announcement, which was cool but hardly informative, there's been nothing but the occasional interview and a handful of concept art and alleged screenshots. Not much to show for more than two years of waiting, which is why something as simple as a trademark registration tends to attract more than its fair share of attention.
Thus it is that we're here to tell you that Square Enix has trademarked the name Deus Ex: Human Revolution (as well as a sans colon version) in Europe and North America. The assumption, naturally, is that Human Revolution is the proper title for the upcoming game - it certainly ties in nicely with the debut trailer - but there's always a chance that it could be an all-new game in development. Deus Ex for the Wii, maybe.
Deus Ex 3 is currently in development for the PC. Other platforms remain unconfirmed and no official release date has been set, but the "next round of info for the public" is slated for release in spring of this year.