Nintendo has confirmed a Mario & Luigi: Dream Team release date of July 12 in Europe and July 18 in Japan.
Nintendo president Satoru Iwata made the announcement during the ongoing 3DS-focused Nintendo Direct event.
The game takes place on Pillow Island where mysterious dreams exist. Mario and others are invited to the island for sightseeing. The plumber can go back and forth between the real world and Luigi's dream world to save Peach.
Additionally, Nintendo of Japan has revealed plans to release a Luigi 3DS XL console. See new screenshots and a trailer below.