Disney has a huge calendar in 2019.
Ralph 2.0 in February, Dumbo in March, Aladdin in May, Toy Story 5 in June, Lion King in July. The kids are gonna be all over Frozen 2 in November.

Not counting Captain Marvel in March, Avengers in April and Spiderman in July. And Star Wars IX in December.
Plus a few other movies.

Bee was supposed to go for a African music theme for 4, in the vein of Grown Woman.
But she dropped the idea for a more traditionnal Urban Pop sound.
Apparently she asked in her contract to be the Executive Producer of the soundtrack but they also brought back the team from the original movie. And she worked with Elton John.

Very excited to hear it, I hope she will bring big vocals unlike her past 2 solo efforts (3 counting the joint album with Jay).