Compile Heart’s Date A Live game for PlayStation 3 is a spirit capture adventure game called Date A Live: Rinne Utopia due out this summer in Japan.
One of the game’s new characters is named Sonogami Rinne (voiced by Kana Hanazawa). It’s possible she is the girl from the recently launched teaser site.
Date A Live includes a large number of original date scenes from the original author Tachibana Koshi. Text and event CG are said to be complete reproductions.
The information comes from a magazine leak, though I’m not sure which one. According to the source, there are no screenshots that show what the game’s system looks like. But there is CG image of one character taking off their uniform, though.