DL bought the sims from Boeing; the two ATL 717 sims have previously been located at a Boeing facility south of the airport (in a, um, "charming" neighborhood...). They're in the process of moving the first over to the main sim center; I don't know the timeline for that to be complete, nor for the second to be moved.

Obviously, while in transit (to include take-down & re-build), the sim will be unusable. I hadn't heard the Brisbane rumor--what a good deal that would be!