Well this is a tad unexpected! Sega have suddenly put out a video for an upcoming Hatsune Miku: Project DIVA game, which features the titular Vocaloid singing along to a song called Cat Food. Nothing like spreading the Christmas cheer with rings of fire, kittens and clowns!
The video mentions that there will be an official announcement about the game next year, but doesn't offer any other details such as what system the game will be released on. It's looking likely it'll be the expected Vita game, but we'll have confirmation soon enough. I won't turn down another PSP title anyway! You can watch the video after the jump.