If they don't replace or update it, it may be fair to say it's dead. If the company doesn't see a point in pursuing the effects-only floorboard, I would probably categorize it as a failed idea. A great idea, but a finished one.
So you've repeated your previous statement, but I'm not hearing any reason for an update, at least at this point. What in your mind needs improving?
IMO, if it ain't broke, don't fix it.
AFAIC before a product can be improved it must be first proven there is a need for improvement over the current unit, or some sort of advancement in technology and as far as the FX-8 is concerned I see neither.
I just don't believe in putting out a new model every x number of years unless it actually offers something new, and at this point I don't see what a new efx unit could have to offer.
I'm not saying it won't happen, I think it will. But right now as far as the FX-8 is concerned I see no need to rush toward a new unit until some remarkable idea comes along to replace what is already the best idea on the market.