offered botox) closed recently, but it's going to be replaced by a Mediterranean restaurant, says The 42 Bus. The place is basically a Mediterranean Chipotle: you get in line, choose a base, meat (or veg option), toppings and so on. They also have falafel and a lot of vegan options.
The location in Bethesda gets good reviews, and I always was weirded out by Radiance MedSpa, anyway, so I guess it's a good thing.
As for the other two spots mentioned in The 42 Bus's post, I've written about them before -- Tasti D-Lite, which is sort of frozen custard, is coming to DCUSA in the spot next to Panda Express, and Lime Fresh Grill, a Mexican fast casual spot (with margaritas!), is coming to the spot between Payless and Radio Shack. Both now have signs up.