Actually, this one has been cropping up every few years for a long time. It has never delivered anything so far and there is no reason to think that it will do so this time.
It is time to get real: What we have in computing power in a "normal" chip these days is pretty much what we are going to get for the foreseeable future. That is not a problem. Software these days is so bloated and slow that there is a lot of optimization potential. And even afterwards, what do you want? Most things will work fine with current computing power levels. Cars, trains and airplanes have stopped getting faster at some time, if the same happens to CPUs, so what?