Oddly enough, screens for a game called Dinosaur King popped up on Sega's press site, but there's been no official word or press release as to what the game is or when to expect it.
Still, it doesn't take a rocket scientist to figure out what this title involves. The screens are pretty telling; it looks like some sort of paleontology sim, in which you dig up dinosaur bones and restore the extinct creature's skeletons as completely as possible.
In fact, it sounds very familiar to what we know of We Are Fossil Diggers, a second-party game that was only released in Japan (and happens to be selling quite well over there). Some of the screens for Dinosaur King also hint that the title has an added drama element, though, so we'll wait until we hear more information.