I do not know!
I find more and more new ways to use it as it is. To the point that I prefer perfectly working OLD one over NEW exiting on full of bugs for some time.
Also modules creation has added some nice new stuff lately.
And I do not see that much VJ world to grow and many new technological stuff can be used with M8 even today. You need some bridges(OSC comes to mind) to do that, but still.
The biggest difference with others (VDMX, Isadora) is for me M8 being the fastest, smoothest running one.
What I miss the most today is reliable alpha channel implementation, but this is as much about good codec as well.