A7 Extra will not be free they said that lite-c gets basically the features of 3dgs extra (and not all) lite-c and 3dgs are different products, hope that they not only add features but also the wed maybe not in full functional state, but its better for the beginners for asigning behaviour etc. right now only info is no shader and basically lite-c becomes 3dgs extra features. and 3dgs extra will be discontinued but it takes time, so wait and enjoy when it comes lol