There is a Disney Villains TV Show in Development for Disney+
Disney appears to be throwing a lot of things at the wall and seeing what sticks these days. There are plenty of things over in development on the Marvel and Star Wars side of Disney+, but now it sounds like the Disney side is getting another show. There are very few details at the moment but according to Production Weekly, there is a new show in development featuring the Disney villains.
As for what kind of show that's going to be, it's very unclear. Our best guess is some sort of anthology show. To do some sort of massive crossover seems like something that would fly in this day and age but the logistics of trying to explain all of that sounds like a huge pain in the ass. This is a developing story and more details will likely make themselves known soon.