That was the ending for 666 satan. LolJust a little off-topic prediction. The final battle against Madara will be at the summoned statue with all the other bijū. The eight tails have been captured and Madara only needs Naruto to complete creating jūbi. After Madara has been defeated, the statue grows unstable and his last words are something in the line of: "the statue's explosion will be enough to destroy the entire nation." This causes Naruto to act fast, using one of his Uzumaki sealing techniques (already foreshadowed perhaps?) to seal all other bijū inside himself together with kyūbi, which will fuse into the 10-tails inside Naruto's body. But now the cheesy part begin: the 10-tails are still growing unstable and Naruto will not be able to maintain its power. He uses a space/time jutsu to transport himself far up in the sky (his initial reaction is to transport himself to the moon) where he causes an explosion that is seen from all over the world. All ninja villages will look up in the sky and see a scarred moon (shaped like a spiral because it's the symbol of friendship) that reminds them of Naruto's sacrifice, hence world peace. Epilogue will show Kakashi look up on the moon and think something like: "Madara was right after all. Everyone did look up at the moon and there was world peace." The final picture will show the memorial stone in Konoha with Naruto Uzumaki engraved on its bottom. The end.
I know it's cheesy, but my predictions are never wrong.