I noticed that 240.0.0.0/4 is reserved for "Future Use". As IPv4 is going to be replaced by v6 (slowly, ok, but still...), what is that future use supposed to b

I noticed that 240.0.0.0/4 is reserved for "Future Use". As IPv4 is going to be replaced by v6 (slowly, ok, but still...), what is that future use supposed to be? Edit: I just saw that my question has already been answered in this thread.