When would the next Muppet film have released if Jim hadn't died?

[Muppet Master]

Something that I've thought about is the fact that, when Jim Henson died in 1990, it had been a whopping 6 years since the last Muppet film. They generally made one every 2-3 years, and yet there really was no theatrical release in sight at that time. I know Jim was focused on other endeavors (Fraggle Rock, Labyrinth, etc.), but I do wonder when exactly the fourth Muppet movie would have been released in a world where Jim was alive in the '90s. Would it have really been The Cheapest Muppet Movie Ever Made or would they have come up with a different concept?

 

[Grumpo]

Found an interesting review of Muppets starts-and-stops, published 3 months ago.
There was a whole lot of stuff that might have happened over the years, some sounds really good, some seems just weird:

 

[Muppet Master]

Great video, Grumpo!

I would have been most interested to see Muppets Time Machine and The Muppets Leave Hollywood. Very neat concepts that I had never heard of before. Meanwhile, The Next Muppet Movie sounds a lot like the 2011 film mixed with Most Wanted, but still fascinating.