I was watching KVUE weather this morning. Looks like they've put signage on the building (maybe mentioned in another thread, but if so, I missed it.) Not the greatest screenshot, but here's what I saw. It's to the left of Frost Tower.
Then here's another screenshot from KVUE Midday News:
. . . and a zoomed in version
In other news, I went to the website and attempted to make dummy reservations to get an idea when it will actually open. As of now, the first night you can book a reservation is Sunday, September 20.