According to Foreign Policy, the 1.44 plane (it's the bigger plane in that image above) was designed with "stealth-like angles, an internal weapons bay and supposedly used electronic countermeasures and special coatings to help reduce its radar signature." The goal was to make the plane highly maneuverable and really, really fast. However, the 1.44 plane was supposedly shelved by Russia in 2001 and thrown in storage. The Bing Maps image shows that that's not exactly the case.
What's interesting is that China's J-20 stealth fighter (revealed in 2010) looks a lot like the Russia 1.44 plane. MiG denied ever giving 1.44 plans to China but a Russian official did say, "it looks like they got access...to documents related to the Mikoyan." If the plane is out of storage, maybe Russia has been sharing a little secrets here and there. More here.