Naruto is going to get FTG
Several people have been predicting it for a while now, ever since Jiraya first mentioned "That Jutsu". I think we finally see a way that Naruto can learn the flying thunder god (FTG) jutsu from his father.
Many people thought Naruto would get it, but we didn't know where he would learn it. Now, a Naruto clone is on the battlefield with three ninja who can use it. Plus, the Kages are going to be doing most of the fighting, so Naruto will have time to learn it if he wants.
My prediction: Tsunade tells the guards to teach the Naruto clone how to do the FTG. The clone disappears and teaches it to the real naruto. The real naruto learns to do it, and uses some clones to send himself to the battlefield with Madara.
The three guards can do the technique, so Naruto will probably require clones to use it at first (same as the rasengan). Over time, perhaps he will get good enough with the technique that he doesn't require clones and can use it in battle like Minato did. Combine Naruto's power, his cool Kyuubi-arms techniques, his rasengans, and instantaneous transmission with FTG and suddenly he will be powerful enough to fight anybody. This would be Naruto's ultimate powerup.