Update July 17, 2017: Kingdom Hearts III was a highlight of this year's D23 Expo, and with it came the reveal of a new world.

Update December 19, 2015: Square Enix recently released a new trailer for Kingdom Hearts III as part of Jump Festa 2015. As a result, we've been able to update our ongoing Kingdom Hearts III feature.

The list is short right now, but it will be updated as new worlds, attacks, and weapons are revealed for Kingdom Hearts III.

Locations

Toy Story
Revealed during Disney's D23 2017 expo, we learned Toy Story will have a dedicated world in the game. It will also have a dedicated story that takes place sometime after Toy Story 2.

The trailer showed action happening in Andy's room, in front of Andy's house, and a new-to-Toy Story area, Galaxy Toys, which is where most of the fighting will take place, according to Nomura.

Big Hero 6
Revealed during Disney's 2015 D23 expo, we learned that Big Hero 6's San Fransokyo will be a world in the game. Sora and pals will interact with the Big Hero 6 team after the events of the film, and Baymax will be there, too.

Tangled
Revealed during E3 2015
, the world of Tangled will appear in the game. We've seen Rapunzel's tower and its surrounding woods, but we don't know if we'll be venturing into the castle and its surrounding village or visiting the The Snuggly Duckling.

Hercules
Shown during E3 as well as during its initial reveal, but never explicitly stated by Square Enix or Disney, it appears Hercules' take on ancient Greece will appear in the game.

As evidence, we've seen Sora fighting Lythos the rock titan as well as exploring an area full of columns.

Looking further into this area somewhat, it looks like Sora and pals will be fighting near a river that will pull you downstream if you jump into it.

Considering its placement in the trailer right after showing off the Tangled area, and the similar aesthetic, it wasn't until I noticed the briefly shown architecture that I realized we were actually seeing more of the Hercules area.

Twilight Town
This is Twilight Town, as evidenced by the general aesthetic, the struggle poster, the crack in the wall, and the layout. Square Enix also confirmed it, so that solidifies things.

Old Mansion
Seen early in Kingdom Hearts II, this building holds some important secrets. It looks like Sora will be revisiting it in Kingdom Hearts III.

Mysterious Tower
Seen in nearly every Kingdom Hearts game, the Mysterious Tower is home to the sorcerer Yen Sid. It's not too surprising to see this area will appear in the game.

For the assorted weapons and attacks we've seen in trailers and elsewhere, head to page two.