As @Sether75 pointed out, late October (TBA). You can find this information on the latest Development Update https://forums.flightsimulator.com/t/blog-september-16th-2021-development-update/453975
There’s an image under “Development Roadmap” that contains that information. (that image is hard to read as the software powering the forum has a bug in which some images will not display when clicked). But if you save that image, you can see the full size. 