I think that the changes between the versions of a single speaker model are usually slight. (with the exception of the recent ep350 subwoofer). I believe that the next product to "up the ante" from the m80 would have to be an entirely new speaker all together and not just a new version. I have heard no rumors about such a plan...

If you are thinking of purchasing the m80's and are worried about something "better" coming out I would say don't sweat it. The M80's are truly amazing speakers.

-David