Think about it, we are about as advanced gaming-wise as it comes.
We've pushed past eye-gasmic graphics, we've utilized every kind of technology - including that gimmicky motion sensing shit, we have discs that can hold massive amounts of information, we almost have no more needs for discs because of online communities that are growing, we can update our systems everytime something gets outdated, the only thing we can't change is the hardware, but that's pretty failsafe.
Is there going to be a need for next-gen consoles? What else could we innovate?