1 to 2 years is the guess. Hopefully during that time Disney will work on completely rehabbing the entire pavilion and bringing some imagination back into Imagination.
Heh. If MJ offends you you'd probably boycot a lot of your favorite Disney films if you knew some of the skeletons in the closets of some of the Golden Age Disney players.
And they weren't accused, they really did it!
But it doesn't matter one way or the other. If you have that big of a problem with it... Don't watch it. Don't participate.
According to Orlando Attractions it will be around for at least a year and we may or may not see a return of Honey I Shrunk The Audience. They also state that the original Captain EO sign is what is being used over the entrance as it was found still hanging in a backstage Disney office. There are also more plans for the Imagination Pavilion with more changes to come. Here is a link to their article about Captain EO.