The "movie" in the OP won't happen. The only Naruto anime special that could happen in the near future is a special about Kakashi, and I've seen a teaser saying it would happen around August.
I'm not sure where I saw the teaser, but I'll see if I can find a link. It seems that I'm not enough of a Narutard to be up-to-date with this .
Do you by any chance mean this?
Originally Posted by kuroihikari
Yes, yes. that's it . I found it here, after all.
EDIT: I can barely make sense of most of the text on the lower left talking about the gaiden.