Kingdom Hearts is one of the more weirdly numbered franchises out there; despite its name, Kingdom Hearts III is actually about the 119th game in the series. Sora, Donald, and Goofy are seasoned vets by now, ready to push back the Heartless once more.
Now that Disney owns half of all franchises ever conceived, rumors abound that we might even see Star Wars or Marvel characters this time around. Nothing's official yet, though—we'll have to wait a little longer for more info.
You can check out the official trailer here.