The “new explosion” in the Greedo shootout seems to just be a shortened version of the old one.
There’s enough versions of that scene now to be able to queue up in random order and gamble on what’ll come up.
I felt some sympathy for Adywan as he works on his ROTJ grade. Good as a new source is to have, it can render much work already done moot. Not even sure whether to hope this is the case (for his well being) or not (for a better end result).