A Nintendo Direct broadcast today has solved the mystery of Sonic Lost Worlds, which was trademarked recently by Sega: It's a new Sonic the Hedgehog adventure heading to 3DS and Wii U.
Nintendo's president, Satoru Iwata, explained that Sega and Nintendo have entered into a partnership to bring the game exclusively to Nintendo consoles and that more details will be announced at this year's E3.
Sega has since issued a statement which says: “SEGA have chosen to exclusively partner with Nintendo to distribute or publish the next three Sonic the Hedgehog titles throughout Europe and Australia. The deal will cover the recently announced Sonic Lost World™, Mario & Sonic at the Sochi 2014 Olympic Winter Games™ plus one other to-be-revealed title. This is a strategic partnership that does not affect our existing distribution network across these territories and with whom we are looking forward to working with on the upcoming releases of Total War™: Rome II and Company of Heroes 2™.”
The biggest announcement in the rest of the broadcast was that of Mario & Sonic at the Olympic Winter Games 2014 heading exclusively to Wii U and 3DS.