It's an updated version, which uses rivet nuts (great). Unfortunately they drilled not only the bottom plate (where the nuts screw into) but the arm and the top plate holes wider than the screw is, completely ruining the idea of the rivet nut. You're only supposed to widen the hole the nut sits on. Now the arms can move ever so slightly in the crashes due to the extra space around the screw, which is annoying. To make things worse, one of my rivet nuts was already ruined at the factory and the screw wouldn't bite to it. Only because I bought two frames I could snatch one of the rivet nuts from the other frame so I could finish building it. Most of the nuts and hardware (including the standoffs) is M2.5 so good luck finding spares from your boxes. Also, the camera opening was too tight for the Tarsier. You have to widen it by yourself by filing it or fly with zero camera angle. It does fly good, though.