Well we know how chronology work in our time vs Naruto manga time. We've been reading the war for more than a year, and it's only been a few days in Naruto world. Via last chapter, it's about to be Naruto's birthday tomorrow(whenever the hell tomorrow happens). This day will be significant, very significant. Nothing will ever give him his parents or repair all the damage done onto the village, but I feel as though Naruto's birthday will be somewhat of a culmination. I think the protags will change the tide of the battle on this day. Again, don't know when it'll happen, but I think we can expect the next power up within the next few months. It seems like forever waiting for the new chapter every week, but it really does go by rather quickly. I don't view full kyuubi mode as the final power up. I think there will be one beyond that. His recognition from the biju has to have more depth to it.