While this isn't in Ashburn, it's between Gainesville and Warrenton at a site that was formerly an NSA signals intelligence facility [1] and is now a fledgling industrial park that this just-outside-of-exurban-DC county is trying to push. It's adjacent to major FAA air traffic control facility.

That being said, I wouldn't count this as "new node" in the Tech Corridor, it's simply a good site in a lower-tax neighboring county, but still in DC's exurban western periphery. When other parts of Virginia away from a 20-mile radius of Dulles are seeing this kind of investment, then we can talk about a Virginia Tech Triangle.

[1] https://en.wikipedia.org/wiki/Vint_Hill_Farms_Station