As said on the game’s official YouTube channel:
Coming to PS4, PS3, PS Vita and PC (via Steam) on October 2, 2015 across Europe!
Samurai Warriors 4-II is a hero-focused saga. Unlike the previous Samurai Warriors games that focused on delivering their narrative by exploring the various regions of feudal Japan, this title casts a spotlight on the characters themselves and tells their stories through 13 exciting new chapters. These chapters revolve around nine characters introduced in Samurai Warriors 4, three fan-favourites from previous titles and a brand new addition to the samurai roster.
The game will feature many new and improved features as the battle, action and character development systems have been revamped. It also introduces a highly challenging and richly rewarding mode called: the Endless Castle. Players can choose to enter and struggle to survive for as long as possible, or to play against the clock and see how far they can get up the castle’s increasingly difficult levels!