http://www.animenewsnetwork.com/news/2012-10-07/steins-gate-film-titled-slated-for-spring
The official website for the Steins;Gate film opened on Sunday and revealed its title and Spring 2013 opening. Chiyomaru Shikura, the head of the original game's developer 5pb. (MAGES),
that the Steins;Gate Fuka Ryōiki no Déjà vu film will have an original story set after the "true end" of the earlier story. He added that since it will not be a compilation of the television series, he could not recommend it to people unfamiliar with Steins;Gate.
YES! I loved Steins;Gate, I can't wait for the new movie! It's looks like it might take place in a new world line if you look closely at the official image. I really hope this new movie will be as good as the VN/anime!!