I wouldn't call it "news." The MuppetVision CM does not know any more about this than park guests know. CMs read and discuss the same rumors that guests do. Given the success of the enhancements to Disney California Adventure and the need to remain competitive with Universal, it's likely that DHS will get a major upgrade in the coming years. Imagineers have undoubtedly been asked to come up with various concepts. Until Disney's top executives approve and fund something specific, what will be removed and what the project will include are just speculation.