New Filler Arc coming up this month in the anime:
http://www.youtube.com/watch?v=h_aHLCY8-Vg
It seems like it occurs after Sasuke vs. Killerbee fight, and while Naruto is otw back to the leaf Village (after losing Madara/Sasuke/Itachi's trail), he encounters
Utakata; The Six-Tailed Jinchuriki. So seems like Kishimoto is involved in the production of this Arc.
Even though we all know the outcome is Utakata being killed by an Akatsuki member, the question is who is the one that will kill him??? Madara/Kisame/Team Hawk are all at the hideout, so I'd guess Pain and are the ones that will kill Utakata some how since they aren't headed to Konoha just yet (they head there after Naruto heads off to Sage Mode train at Myobokuzan). Zetsu will probably appear to as usual lol.
This is happening before Naruto does Sage Mode training so don't expect him to use anything new lol...But damn we're so close to Sage Mode training & Pain Invasion, hopefully this filler isn't long. Apparently Sasuke vs Killerbee is only two episodes:

Originally Posted by
Wikipedia
The Youtube video says the filler starts on
January 21st. SOAP BUBBLE RELEASE JUTSU HERE WE COME!