The video game has been available since February 11 in Japan, for Playstation 4 and Playstation 3 home consoles, as well as the Vita handheld, but it might also soon/eventually be coming to PCs. It’s been discovered that, as of February 3, Samurai Warriors 4-II has been listed on Steam.
More and more Japanese games are making their way onto the digital distribution platform, so this is certainly a possibility. The listing, however, is not an indication of whether the game will be getting a Western localization.
The most recent surprise, current news aside, was that Tales of Zestiria had been listed in the digital distributor’s database.
Thanks to 4chan.