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I dont have the title but its episode 167 of shippuuden

http://www.animefreak.tv/watch/naruto-shippuuden-e...

thats the link you can watch it yourself, its at the very end

It's first revealed during Shippuden episode #126: Twilight during the conversation between Tsunade and Jiraiya. Kushina Uzumaki as his mother is also revealed then. Naruto himself doesn't learn the truth until episode #168: The Fourth Hokage (Yondaime Hokage) during his conversation with Minato.

In the most current episode (167), the 4th Hokage appears, but he doesn't tell Naruto if he's his father or not yet. He will reveal it in the next episode (which comes out this Thursday).

well, it was obvious that 4th Hokage was his father.. However it wasnt revealed in any of the episode until now... officially it will be revealed in the upcoming episodes... I guess... However, you get the doubt that 4th was his father,, in the episode when Pervy sage recalls the naming of Naruto.. it was something.. I dont remember now... bt it was obvious somehow..

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