Plot no jutsu..yup you heard me right.
you see,sasuke has the unique potential to pull pretty much any random sharingan tech out of his ass..just like how itachi conviently pulled izamami out of his ass..or how shisui has a magic genjutsu that can mind fuq anyone..
kishi has been pulling BS rabbits out of his hat throughout shippuden..like how naruto learns how to control kyubii but someone gets an even better form(bm)
MORAL OF THE THREAD: sasuke is gona get some jenk new power. its most likely going to be related to sharingan or hatred