I might have overlooked before, but I notice there is an indication on Tesla's website that Tysons would have superchargers soon.
When I spoke with an employee at the Tysons Corner Center Tesla showroom about expanding the number of HPWCs in the parking garage, he mentioned that they were supposed to get "something like 20 chargers" in the future. I can only assume that these will be the urban superchargers. The mall is the perfect place for a large installation of urban superchargers, so I hope he is right. This conversation happened about four months ago, so who knows what the timeline is, if true.