Rumor is false. I've posted on this probably 20 times within the past year or two.
DisneyQuest is not planned to be closed anytime soon, nor is the DisneyQuest at WDW considered a "failure" ( the other DQ locations were, DQ-WDW is not! ). ESPN, last I knew did not even want to take over that building.
Can we PLEASE stop these threads?! My gosh, a new "disney quest is closing" thread pops up once a month!