Oh? Has there been conclusive evidence of that? So far it looks only evident we will get at least a few more weeks of fillers, but beyond that... I haven't seen anybody reporting another season of fillers.

The longer we wait now, the longer we will eventually be able to enjoy manga based Naruto, before the anime again reaches the manga limit. There are plenty of other excellent series to fill the gap while waiting for the good old Naruto to come back.