If Kishi isn't lying it's been said this is the year of Sasuke, so i don't think Naruto will do anything huge, but I think his story will progress. It was also said that Naruto and Sakura have to grow up, so I think Tobi will hold the Konoha ninja's at bay until Pein arrives (since he's already said he's going for Naruto after Tobi ordered him to). Pein will try to capture Naruto, and in doing so will tell him he killed Jiraiya. naruto will either be stunned, or flip; either way he won't be doing anything. He will be escorted away by someone so that he isn't captured, Tsunade if she has talked to the frog already will leave a message for Kakashi or something, and go stop Pein and Tobi so Naruto can escape back to Konoha (probably unconscious). Tsunade will get killed. Forcing Sakura to grow up. How Konoha will keep the Akatsuki out... I don't know.

My theory^^^^^