Sojourn, that mask feathering is there on the original. As i haven't changed the background on that shot there isn't anything i can do about that without replacing the whole background and i didn't really want to remove the original model work in that shot

Yes, the AT-ST's were the surprise. They have been there all along but i wanted to keep them secret until the film was released, but decided that now is the time.It's been a tough secret to keep

Rule #1 - Adywan lies ;) (Doctor Who fans will get that one)