The update is available for free, and you’ll need to log in at the .org store or at the Cowan Simulation website to download the latest version.
While it’s not a massive update from the X-Plane 11 version, it includes all the new features like “new lighting, FMOD sounds, flight model, rain effects, and more”.
You can get the B206B3 and the B206L3 separately or in a bundle .