It is the latest rumor, but the insider who mentioned this is a concern in this case. The source of that rumor also said "if the ratings dip again for this show,then the attraction will also disappear".
The source of that comment is questionable in terms of really being an insider a first place after source was called out in the Test Track thread on a couple things. That person was called out for claiming that there is some arguing between the two parties concerning Test Track, when everything was signed and agreed upon. That person also was called out by Raven for claiming the the next DVC resort is built connected to Epcot, when the next DVC resort will not be built in Epcot.
The person I am referring to first became a member on these forums in 2011. I am not saying that the person is wrong about Disney is looking at taking up the two buildings, but the person is questionable as an insider based on other people as insiders correcting the insider I am referring to.