I was very interested in that bird.
Basically, it's one of the most realistic addons available for FSX/P3D, and it's the only serious representation of the Concorde anyways.
That new P3D version is an adaptation of the FSX one which had some incompatible stuff. They made quite a lot of optimizations too, if I remember correctly.
On the bad sides, the VC is still the same as the previous version, so it still has some non-3D gauges and such, but that doesn't really matter.
The worst thing for me is that the VC is not totally working. You still have to use 2D panels to interract with the systems and engines of the plane, and this is an absolute show-stopper for me.
The technical reason behind this is the amount of systems, gauges, switches and lights that would bring the FPS down to single digits if everything was modelled and interractive in 3D.