Well, it might be because development is difficult, and also because Laminar has been modifying the famous SDK, which they have completed, I believe, but it is also true that I had never expected a development to come out before, not even when I worked in a paid capacity. Maybe we are waiting for X-Plane 13 to come out, and since there was no longer a promise to release a version for the 13, we are left with that, with the unfulfilled promise of a magnificent plane that unfortunately we will no longer be able to fly except in bad versions like the MSFS one. But it flies! and it is accessible. I also fly it, sometimes, returning to XP11.