From Kishimoto interview at cinema today.
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Translated bit:
Q: Speaking of Naruto, his dream of being Hokage came true, but when did he take the exam to become a jounin?
Kishimoto: Naruto didn’t become a jounin. He became Hokage as a genin. Sasuke is not a jounin or chuunin either, but rather, since he left the village, he is a nukenin. That’s enough for them (laughs). But I thought that having him suddenly go from genin to Hokage would be amusing and Naruto-like.
Credits to the translator Eri on Tumblr.
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Uchiha Sasuke
Unranked
「何よりお前は…ナルトよりウスラトンカチだ」
"Moreso than anything else...you're more of a 'usuratonkachi' than Naruto"
父として 師として――
双眸が見すえるは忍界の未来!!
As a father, and as a mentor――
A pair of eyes that focus on the future of the ninja world!!
血継限界 ”写輪眼” を有するうちは一族の生き残り。少年時代は復讐者として忍の闇を歩んだが、ナルトとの死闘を経て和解を果た す事に。”写輪眼” と”輪廻眼”を有し、現在はナルトと比肩する強者として、忍界の未来を守護する。
The survivor of the Uchiha clan who is endowed with the kekkei-genkai, 'Sharingan'. When he was a boy, he walked in the darkness of shinobi as an avenger. But after he faught Naruto to the death, he achieved reconciliation. Possessing the 'Sharingan' and 'Rinnegan', he's a strong man who currently ranks equal to Naruto, and protects the future of the ninja world.
マントの下はベストを着用。”草薙の剣”を背負う。尚左腕は失ったままのようである。
Beneath his cloak, he wears a vest. He carries the 'Sword of Kusanagi' on his back. In addition, it seems that he is still missing his left arm.
LINK (the Gaiden black info box)
明るい世がため
極秘任務を続ける!!
In order to have a brighter world, he continues on an absolutely secret mission!!
大筒木カグヤの痕跡を辿り、「後に来る者」の 襲来に備えるべく旅する。
Following the vestiges of Otsutsuki Kaguya, he travels in order to prepare for the invasion of 'The people who will come later'.