Full article hereThe title will be called Super Monkey Ball Deluxe, and will feature 300 stages, over 100 from SMB1, 140 SMB2, and 46 stages that will be exclusive to SMB Deluxe. SEGA have also confirmed that Deluxe will all feature all twelve party games from the two titles.
Confirming the release, Scott A. Steinberg, Vice President of Entertainment Marketing, SEGA of America, Inc said that, "Super Monkey Ball has been a fan favorite since its introduction on the Nintendo GameCube in 2001 We're pleased to finally make this unique, broadly accessible franchise available to gamers across all platforms."
Original GAF thread here