My prediction for the next trailer:

Sora continues fighting off Heartless and encountering new faces, including Strelitzia at Quadratum.

Donald Duck and Goofy goes face to face with Hades at Olympus until they are assisted by Kairi (or maybe Roxas)

King Mickey explores the library in Scala ad Caelum for info on the ancient Keyblade Masters upon the mission given by Master Yen Sid.

Aqua trains Kairi to become a strong Keyblade wielder.

Riku enters Quadratum in search for Sora.

Add any prediction you want.

Sure, I'll throw my expectations into the ring. lol

More Quadratum, but now Xehanort's all up in it. He may even be the voice over for the trailer. Quick glances at more Dark Road and/or Missing Link characters / elements.

Maaaaaybe a reveal that the Master of Masters is in Quadratum. If so, I half expect a casual namedrop for him, since I don't expect his name to be anything worth all the waiting and hype they've built up for it. lol?

A Disney world reveal (most likely Moana if that new Keyblade is any indication). Maybe a brief look at the scene where Donald & Goofy reunite with Sora, since I'm not expecting Sora will go to any Disney worlds without them.

Maybe ending with a quick look at Riku in Quadratum, or whatever he's doing. lol Maybe wherever he shows up is where we'll see Yozora. idk.