These fillers so far have been funny and well written, it seems they will keep mixing it up with the manga storyline. Naruto will face challenges as he gets to the island that the Toad Sage prophetized!

Episode 227 "The Forgotten Island" (忘却の島) September 1, 2011
Episode 228 "Fight, Rock Lee" (闘えロックリー) September 8, 2011

(to be updated further)