from
http://www.leafninja.com/
Episode 208 and 209: Naruto and Kiba are charged with protecting a bowl considered a national treasure. 209 also sees the possible return of Gantetsu(?) [Jiraiya’s Rasengan example victim]. Could just be a reuse of the name though, possibly the name of the bowl itself.
still doesn't sound like kakashi gaiden.
looks like we have another season of fillers