While seldom used on PlayStation 3, Sony have announced that Remote Play on PlayStation Vita will be a mandatory feature for all PlayStation 4 games, except for games that will utilize peripherals, such as PlayStation Move, that cannot be replicated on PlayStation Vita.
Remote Play on PlayStation Vita will be a mandatory feature for all PlayStation 4 games. This is except for games such as PlayStation Move. This was what Sony have announced. These games will utilize peripherals. PlayStation Move cannot be replicated on PlayStation Vita.