There's no way they're not bringing it back at some point, or not sending it to WDW. I think both. It makes sense that it would go to WDW for the 45th and then come back to DL at some point.
I'm so glad we got to see it. We lucked out with the best view ever and didn't even have to stake out a spot way in advance. I recently created a 2-page scrapbook layout about it: