According to an image floating around the internet, possibly from an early sales copy, the cover of the December issue of Newtype, on sale 11/10, announces that Puella Magi Madoka Magica will be getting a movie. While this image is believed to be real, it is not 100% certain. (Update: It is now confirmed to be legitimate.) It had been previously announced that the issue would have a huge announcement. Judge for yourself or take as true:
More details to follow when it goes on sale later this week.
Image ©Magica Quartet/Aniplex, Madoka Partners, MBS
Update: A confirmation image has appeared via Moe Ota News Sokuhou