Currently version 0.8.9 is under test. Soon with the 0.9.0 SWIFT will go into public beta. I myself participated in the mapping of the AI fleet (mainly FLAI) and flew many hours online at VATSIM. With P3D.4.4. I can only tell you. You get a nice product for FS9, FSX, P3D and X-Plane. A qualitative leap for VATSIM. Look forward to it. The developers are still working and it will start soon.
Lothar