The Idolm@ster Movie will hit theatres in Japan sometime in January 2014 (a specific month commonly referred to as 初春 in Japanese), Namco Bandai Games’s general producer for the series, Yozo Sakagami, announced at the Yokohama Pacifico leg of The Idolm@ster 8th Anniversary Hop! Step!! Festiv@l!!! held earlier today.
Currently on the Net some anime news sites have reported that The Idolm@ster Movie was announced today to be set for a Spring 2014 release. This is likely to be an error – the Japanese term used for today’s announcement was “2014初春”.
初春 is an extremely confusing term that literally means “the beginning of Spring”, but is more commonly used to refer to January – the first month of the Western calendar (which used to be, you know, the beginning of Spring under the Gregorian calendar a long time ago).