Retro Studios are responsible for some of the most phenomenal games of the last decade, developing both the Metroid Prime trilogy for the GameCube and the Wii and 2010's Donkey Kong Country Returns. Although Nintendo's Monster Games is hard at work porting Donkey Kong Country Returns to the 3DS, Retro Studios has been laying low lately. But according to Nintendo, we should be hearing about Retro's new title soon.
Speaking with the Official Nintendo Magazine, Nintendo's Hiro Yamada stated that he hopes to introduce Retro Studios' next game "in the not so distant future." When that could be is anyone's guess, but with Nintendo's recent decision to not hold a large-scale press conference at this year's E3, hopefully we'll see this announcement through a Nintendo Direct before or around that time.
If that's not enough Retro fix for you, earlier this month it was announced that Armature Studios, the development team formed by the founding members of Retro, are currently working on Batman: Arkham Origins Blackgate, a "Metroidvania" Batman spin-off set to release for the 3DS and PS Vita later this fall.
[Source: Official Nintendo Magazine]