Well I just happened to have to go to Home Depot today, which from top of their parking garage you get a decent view of this new development in Merrifield. So here's the pic. It's one big development, but at least two separate buildings I believe. Condos, with ground floor retail. Kinda hard to see but their is a lot of parking garage attached there to the left side. Whole thing is pretty far along. There were 3 tower cranes up for all this at one point, but those are all gone now. Not too tall. I believe 8 or 9 stories. Don't believe they took anything significant down for this. Most of the area where these buildings are now were gravel lots, where I believe the neaby BMW dealership stored some cars. The movie theater in Merrifield is just to the right, and Gallows Rd runs parallel to the building behind it from this vantage.
It was my understanding that a lot of stuff in that area is on hold till the Silver line comes thru. The idea being that once metro is in place, the height restrictions throughout Tyson's area will go way up. So they are waiting for that to build as big as they can.