Man, am I excited about this! Tecmo Koei has announced the return of the series that a lot of Musou fans have been waiting a long time for. Warriors Orochi 4 is confirmed and it's coming to the west later this year. No other details have been announced at this time.
Warriors Orochi is a series which takes characters from Dynasty Warriors, Samurai Warriors, Dead or Alive, Ninja Gaiden, Soul Calibur and more and throws them all together into one hack and slash adventure. No word on what the story for Orochi 4 will be yet but my guess is something to do with all the characters being sucked through a portal into another dimension where they have to save the world from impending doom. I have hundreds of hours in Warriors Orochi 3: Ultimate as all of the characters are fun to play and the progression system and fun missions add a ton of replay value.