I was hoping for a supertall, but 1000' is such an arbitrary number. With the exception of Trump, this will be the tallest new building in 20 years.
I read a Hines PDF a few months ago indicating that the West Tower would be the first to start. Best guess is that it's a rental. If Hines doesn't anticipate developing the other two towers (which include office space) for several years, then there's less of a conflict with their other project across the way, River Pointe.