According to MH that is Naruto's new jutsu & it is named "Senpou Oodama Rasengan"
Also it seems that the upcoming chapter mostly contains 'Naruto & Frogs' Vs 'Animal Realm Pain'. And also it might be possible that we would see Tsunade's real faces in this chapter or the upcoming ones because it seems that the side-effect of her Seal Jutsu has started to take action on her.
Also it seems that at the last page of the chapter Naruto gathers a hell lot of nature energy to use for maybe his Shadow Clones (thats what the hand sign looks like to me).
What does THAT Rasengan mean in english? Double Ultimate Rasengan?