sasuke ended up excactly what kakashi sensei told him when naruto and sasuke fought each other, after when he killed itachi he destroyed everyone in the akatsuki orginization, and named it a different organization, and he became the leader of it. and he also went out on to kill naruto, but i won't tell anymore.
Naruto shippuuden is still going, he has currently formed 'hebi' and is hunting itachi, his members include Suigetsu, a genetically altered shinobi who wields zabuzas sword(Kubikiri Houcho) and is after kisames sword, samehada.
He is also accompanied by Jugo who is in possession of the original cursed seal, he follows sasuke because he sees him as his cage, who was formerly kimimaro who died because of sasuke. 3rd is Karin, a woman loyal to the sound and she has the hots for Sasuke, naturally.
As for the manga, it's further ahead and [S]Sasuke[P]has[O]killed[I]Itachi[L]and[E]is trying to[R]Destroy Konoha[S]
--- Sasuke kills Itachi then forms the "Taka" or the Hawk.
episode 134-138 is the final battle between sasuke and itachi
Episode 211
He and the other sound ninja fight Sasuke in episode 109 (An Invitation from the Sound).
On Episode 110 naruto,kiba,choji,neji and shikamaru they started finding sasuke on Episode 128-134 Naruto And Sasuke Had A BIG FIGHT if you cannot find the episode on youtube search it on :www.narutoget.com
the episode is episode 51
in manga
episode 134-138 is the final battle between sasuke and itachi
It never happened, and it never will happen.
Sasuke apppears in the first episode
kakashi will die because he kill by sasuke and naruto kill sasuke then he become a hokege.just an imagination.
that doesnt even happen
Sasuke has not died yet.
Episode 109. an ep. or two later is when Sasuke retrieval arc. begins.
Sasuke joins Orochimaru in the end of episode 109 but everyone(except Sakura) finds out in episode 110
Episode 211
episode 1001
Episode 117