all 6 are canon

August 1: 323. Gathering of the Five Kage...!!
August 8: 324. The Unbreakable Mask and the Popped Bubbles
August 15: 325. Jinchuuriki vs. Jinchuuriki!!
August 22: 326. Four-Tails: King of the Sage Monkeys
August 29: 327-328: Naruto Shippuuden Special ~An Unchanging Will (or ~Proof of Good Will): When the Heart is Moved