WMG / Theatrhythm Final Fantasy

Culex, Square Enix's other world hopper, will appear
He is apparently searching for a new world to conquer, but he can't survive in the Mushroom Kingdom. Being on a Nintendo platform doesn't hurt.

Yu Yevon will make a surprise appearance.
The fans will naturally go what, but be unexpectedly pleased by his actual portrayal in the game, making him more than a joke and a disappointment in the eyes of fans. Bonus points if Square-Enix keeps his "tick with a glowing eye" form.
  • I can actually see that happening.

The game is gonna be part of an Alternate Continuity.
Self-explanatory, really, considering the game's art style and premisenote , but there's still the question about how this game came to be. So, my guess is that this game spun off from a custom quest (read: playable fanfic) from Dissidia 012 Final Fantasy, since that game's Japanese version allowed people to share their quests online via Mognet: one where a villain, most presumably Kefka, got reality-warping powers from Chaos and used them to turn the heroes into their avatar versions, as the game's quest editor allows players to include them into their speech bubbles. Square found out about that quest, decided Ascended Fanon was a good idea and the rest is history. Or this game simply makes all of the heroes' avatar versions seen among the avatars in Dissidia 012 an Ascended Extra. Either way, this is the theory.
  • Sony is in contract with Square but they don't own them. They only control games made for their own consoles, they have no control over what Square does for other companies, and they likely couldn't care less what they do with Nintendo as long as Square still makes "them" money.

Three heroes, one villain
. Each game will be represented by those numbers, in order to avoid the fandom backlash Dissidia 012 experienced after VII got three heroes (only Cloud and Tifa were actually playable, but Aerith counts anyway, and of course Sephiroth was the villain) whereas some slightly less base-breaky games got diddly-squat (all VI and IX got where additional stages, both of which were the smallest in the game)...or is this too much wishful thinking?
  • It ended up being two heroes per game, except (surprise surprise) VII which also got Sephiroth. IV got three characters as well. VI has the most in-game songs.

The exclusive characters for Theatrhythm were originally planned for Dissidia but got cut out
. They just couldn't figure out how to make ol' man Cid fight.
  • This makes sense, likely they were put in as an apology or at least nod to the fans who wanted more characters.
Or just the fact that the 2D characters in Theatrhythm are much much much easier to program than full 3D characters with backstories and voice acting thus they were able to fit as many as they wanted.

The cast of Bravely Default will appear in another Theatrythm game
  • Considering it's a spinoff of a Final Fantasy game, it's only a given.

All-Star Carnival will be ported to consumer platforms.
  • Likely candidates for porting will include the PlayStation 4 and PS Vita (due to Sony's platforms being traditional choices for many Final Fantasy games) or possibly even the Nintendo Switch (as the first two games are on the Nintendo 3DS); all of those have the twin sticks necessary to perform dual slide notes. It might not be the exact same game due to the fundamental design of All-Star Carnival, but it will at least use a lot of the same mechanics (rainbow Criticals, dual notes, Co-Op Multiplayer, Medleys, Transcendence difficulty, etc.)

The acronym "BMS" is a Shout-Out to beatmania simulators.
For context, "BMS" is the term used to refer to charts in beatmania sims.