Here is a YouTube video showing Austin Meyer at the controls of X-Plane 12:
As you'll see from the video, it quite clearly shows the new volumetric clouds, something Austin has wanted to add to X-Plane for the last 25 years. Even though the clouds are still in a preliminary stage, they are still very impressive and a big jump over previous generations. Also present in the video, is the Airbus A330, a new addition to the X-Plane fleet. There's still quite a bit of work to do according to Austin, including new scenery to render. More News to come so stay tuned.