As we can see in this trailer:
http://www.youtube.com/watch?v=lULByKYhztc (Watchable in HD :o)
Shown at the end of the latest Naruto Shippuuden episode, we will have another filler arc on the 18th of December.
Manga readers already thought we would get a filler arc because the Three Tails was skipped. The trailer apparently also shows stuff from the 3rd movie.
I don't really know what's going to be filler and what's going to be movie. But I guess the Crystal Element user is part of the movie.
What are your thoughts on this filler arc? In some way I am disappointed because future epic battles will take longer to get animated. On the other hand, a good filler arc is nice too. If they don't fuck up the story like they did with the Sora/Kyuubi thingy, it might be a good filler arc. Hope it has some good story about the 3 tails.