I'll certainly be keeping an eye on this one, as my employer (Nashville Software School) will be moving into the building adjacent to this property in February( ish ). In the sat. image, it's the building between Interstate Blvd and Nolensville with brown roof. Used to be the home of the Tenn. Hospital Association. It's undergoing a full rehab inside and out. Tech company Technology Advice recently moved there from Brentwood (hooray for reverse biz migration!) You can read about it here: http://www.tennessean.com/story/money/2015/03/19/tech-marketing-firm-buys-nolensville-pike-office-building.
Anyway, If this project gets underway, I'll be able to provide plenty of updates/photos : )
Before and after of 500 Interstate Blvd