Well logically you're probably correct, the fact that kishimoto hasn't showed anything new means one thing. Kishimoto hasn't thought of any new jutsus to give naruto. Good thing though is that kishimoto can have naruto pull something new and nifty right out of his ass since it would be easily justified. I just hope we actually see something aside from naruto starring down his opponents in his quasi enraged fox state just like we saw him do in the 30% itachi battle, the time he first meets sasori and diedara, and of course the current fight with orchimaro.