One thing is for sure, the manga story is getting really good.

My money is on there being a no show with regards to the Itachi-Sasuke fight. There might be some emo shots from Sasuke whilst Itachi is explaining to him what really happened, but I don't think Itachi will go all out. Remember, him meeting Sasuke and baiting him all these years has to tie in with his activities with Akatsuki. I don't think these are unrelated, as Akatsuki is hardly a place you go just to kill time.