That new Digimon game is Digimon Story: Cyber Sleuth for PS Vita, the latest issue of V-Jump reveals.
Due out in 2015, the game is a rule of right training RPG set in near future Japan. It features several real world locations, such as the city and station. An image in the magazine shows the hero walking in the real world with several Digimon.
Thanks, Game Jouhou.