Unrelated to the recent posts - remember that Disney will shill Frozen through multiple mediums. They made two short films and a 5 part Lego series so Disney would of course get their biggest video game property (outside of their side companies like Star Wars and Marvel) to throw Frozen 2 into it.
In fact, just tonight
another Frozen short film was announced for Disney+, which takes place during Frozen 1. It's Olaf's origin story and follows his first moments of life following
Let It Go. It's completely unnecessary but alas, it exists.
"Frozen" scene stealer Olaf gets full origin story in Disney+'s "Once Upon a Snowman" special.
tvline.com
Disney will find ways to keep Frozen alive and relevant, and the next big budget Disney video game is absolutely right there for them to exploit.
We can all disagree with Disney on how they treated the world in Kingdom Hearts 3 and not be thrilled at what they're going to do to harm the future stories for this world, but to deny that Frozen would come back at all just seems ignorant.
Now to spend my 5th year hoping Disney sneaks a KH reference into the background of one of their projects. Forever salty that Wreck-it-Ralph 2 didn't do it. Thankfully Ducktales was kind enough to give us a confirmed Kingdom Hearts reference.