If you are saying where you could watch it as an English Dubbed, check out animefreak.tv
Every Anime series plus Naruto and Naruto Shippuden in dubbed and subbed versions :)
I have found one more site totally based on Naruto Shippuden. In here all the episodes are available, check this one narutoshippuden-episode.com
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you can go on a website called crunchyroll and it is free to watch naruto shippuden subtitled in English but i don't know of anywhere that it is dubbed
For naruto shippuden its on episode 107
type in google watch dragon ball and then click on the first thing you see then you go on the web site and on the top of the site there something say[Click here to watch Naruto & Naruto Shippuden Episodes!]click and the enjoy!bye
it is not known yet, but it goes beyound 200 shippuden. The manga has the episodes more faster and furhter though. Go to youtube and type in "Naruto Manga Episode 469" (that is the most recent one. OTherwise, there are no spoilers or info.
If you mean when is naruto shippuden episode 167 going to be in english dub then you are looking at around april 2013 :)