While the War still going, Killer Bee train Naruto a new Technique in Beast Form, however the new beast Form look more puny and cute Kyuubi(its like a Tanuki), unlike the old menacing beast form seem more dangerous and powerful. I though he'll use this form to defeat sasuke lol. ^_^. Anyhow good thing that the rasengan is a copying of the Tail bomb(Technique that only Tail beast can use). so Naruto won't use the Beast Form Anymore(because it life treating).