"Mario & Luigi: Dream Team, known in Europe as Mario & Luigi: Dream Team Bros. and in Japan as Mario & Luigi RPG 4: Dream Adventure (マリオ&ルイージRPG4 ドリームアドベンチャー Mario ando Ruīji Aru Pī Jī Fō: Dorīmu Adobenchā?), is a role-playing game in development for the Nintendo 3DS. Revealed on February 14, 2013 on Nintendo Direct, it is the fourth entry in the Mario & Luigi series of Mario role-playing games and will be released in Europe on July 12, 2013 and in North America on August 11, 2013."
Source: Wikipedia, "Mario & Luigi Dream Team", available under the CC-BY-SA License.