Ok I found the thread containing the info about a weather engine...... It looks like it will be a more of a free update to SkyForce not generically another addon...
But my question is, exactly how will these products work with each other? My understanding of it is (correct me if I'm wrong):
1. Skyforce is a sky/cloud texture addon
2. Weather force will be a weather engine only. (to work in conjunction with skyforce)
3. Environment force will be a....
a) shader tweaker
b) a sky/cloud texture addon
c) a earth/water texture addon
d) a weather engine
e) an addon basically replacing (by doing the same things as) skyforce, weather force, and Texture Direct combined.
So would environment force be basically putting skyforce and texture direct users's $50+ USD spent on those addons to waste if we want to buy environment force?
In my opinion environment force should be a free, or highly discounted, addon only for those who own skyforce and texture direct.
EDIT: or will environment force include sky textures etc but they will not be as good as skyforce's? Therefore making skyforce's textures still significant? It would be amazing to have an in sim video of changing between which REX addons are used so we could get a good and confident feel as to exactly how these products work with each other.