OMG Sasuke is going back to the Valley of the End!!!

I just figured it out!  He's going back to the Valley of the End where Naruto and Sasuke had their final battle!  But it's also going to be back in time to when Harishima and Madara fought!  Maybe they all fight in one giant battle Royal!  Holy crap I think that's it!!!!  Then we could see the Madara vs. Harishima fight!! That would be awesome!!!!!