The Tale of Two Towns will be released for the two handhelds this summer.
http://www.nintendoworldreport.com/news/25981
Natsume announced today their newest Harvest Moon game, Harvest Moon: The Tale of Two Towns for both 3DS and DS.
The game focuses on two neighboring towns that have become bitter rivals. The player will get to pick which town they want to live in, either the "animal-loving" European hamlet of Bluebell or the plant farming Eastern-styled village of Konohana. As in other Harvest Moon games the player will establish a farm, strive to be a successful farmer, and establish relationships with the villagers. The ultimate goal of The Tale of Two Towns is to reunite the villages.
Harvest Moon: the Tale of Two Towns is slated for a release this summer.