A bunch of talking. Seriously, how much do you want to bet that the next chapter is either going to be A. Madara talking down to Obito the entire chapter, B. skipping over to Sasuke and having Orochimaru/Karin/Suigetsu/Juugu do a bunch of talking with the mystery man, or C. skip over to random people who will do a bunch of talking (like finding out what's up with Bee).
Besides, its not like Madara can whoop Obito's ass. Obito is keeping Madara's eye and the other half of Kurama hostage. Madara wouldn't risk that, not to say he won't do something, but you can clearly tell how little Madara cares about this new development with Obito.