Terrain Mixer 1.8.6 is finally available. You'll be able to do a lot more with this new version. Plain Terrain will allow you to generate ground procedurally. With Ground Blending you'll be able to make a lot more convincing compositions. New sky textures have been added as well, so now there's more than 50 of them. You will also find some other useful updates. We're currently working on the new documentation and video tutorials. If you have any feature requests please let us know about it.