A new add-on is coming, slowly, to X-Plane.
In the afternoon a 717 in development was announced.
The Boeing 717 (also known as MD-95) was presented with three external renders, so we are assisting the very early stages of developing.
By now we know that the 717 will be freeware and will feauture a virtual cockpit.
Take a look to the renders released by Kristoffer Eriksen Fokker on Facebook.