Some of that artwork and the celebrity photographs will return, but probably in sleeker frames that fit the mid-century modern feel of the new hotel.
A friend in Guest Relations who works with VIP guests in the hotel alot (and thus DL Hotel leadership) told me that the rooms are all done now. There is still landscape work to be finished, and obvious work around the pool and new main lobby area, and a bunch of new furnishings coming to the common areas. All three towers are still being worked on, for instance just last week a massive new bamboo-modern chandelier was installed in the Adventure Tower lobby. And the marquees for all three towers still aren't in. Plus lots of artwork for walls is still to come. Etc., etc.
They are really down to the last six weeks of this project though. Supposedly the entire thing, including the new Fantasy Tower lobby, should be done a few days before Thanksgiving.