Square Enix recently released a new Japanese teaser video for Valkyrie Profile: Lenneth. The company didn't provide any details on what the teaser may be for, but did create a new Japanese Twitter account from which more information is likely to be provided in the future.
Valkyrie Profile: Lenneth is a PlayStation Portable remake of the first title in the series, which was originally released for PlayStation in 2001. The game is heavily based on Norse mythology and follows Lenneth Valkyrie after she is tasked by the gods Odin and Freya with recruiting einherjar, spirits of fallen warriors, for the coming of Ragnarok.