X-Plane is incredibly extensible. You can simulate new aircraft, make 3-D models, or even change the functionality of the program in drastic ways.
We’re starting internal and private testing of VR preview 4 – if it goes well, we’ll release it early next week. A few notes on usability:
We got a metric ton of “bug reports” that users couldn’t click “Disable VR” when using the 3-d mouse. Read More
It’s basically VR2 with the crashes and chaos fixed. The plugin system in VR2 had a bug that seems to have caused plugins to go completely crazy and cause weird rendering settings changes. This should be fixed in VR3, but check your settings to make sure they match what you expect. Read More