Now that SPD and EAD merged things are going to be a bit different; for the start, Sakamoto now has a development team if he were going to create games bigger than Rhythm Haeven.
EPD1 (Konno's team, Mario Kart team): Mario Kart, obviously, and maybe something for mobile since Konno is overseeing every mobile game
EPD 2 (AC/Splatoon/WiiSports team): Animal Crossing NX, Animal Crossing mobile, Splatoon NX. Safe bet.
EPD 3 (Zelda): BotW, then the thief game Aonuma mentioned some times ago
EPD 4 (Pikmin/NSMB): Pikmin 4, New Mario Maker
EPD 5 (Steel Diver, Wii Fit, Star Fox): I honestly think this division doesn't exist anymore. I don't think we'll see another SF for a while, Wii Fit is dead, Steel Diver nobody cares about. Assuming it's still alive, maybe something for mobile. Or F-Zero NX, if Nintendo decides to revive the series.
EPD 6 (Rhythm Paradise, Metroid, Tomodachi): Oh, Sakamoto's team. Tomodachi NX is a safe bet, I think. I don't think without Iwata Rhythm Haeven will continue. So... I dunno. Sakamoto might finally create Metroid Dread, returning the series to its 2D roots.
EPD Tokyo 1: "A new kind of Mario", as Koizumi mentioned.
EPD Tokyo 2: Some filler-in game (Captain Toad, NES Classic)
Retro Studios: Metroid. Remember when Tanabe told us how he'd like to continue the Syrux plot and so on? I think Retro is already developing a new Metroid Prime for NX (was for Wii U, then it got moved), but obviously Tanabe has to tell us in a hypothetical manner. Almost like Square annuoncing DQ for NX then going "No, we're just thinking about it!"
Monolith: A new Xenoblade, I guess. Might reuse the engine of X.
Nd Cube: A Mario/Wii/AC party.
NST: Mario vs. DK mobile.
Intelligent System: Fire Emblem mobile, Fire Emblem NX, puzzle games
HAL: Kirby, smaller games like BOXBOY