NIS America announced earlier today that they will be running a one-week closed beta for Grand Kingdom on the PlayStation 4 beginning on May 3.
Players can register to join the beta at: link
During the beta, players will have access to four character classes (Hunter, Fighter, Witch, Medic) and will be able to get a feel for the game by playing two quests from the single-player campaign before jumping online to join up to three online war battles per day.
Players that participate in the beta will also be able to keep their squad members and sweet, sweet mercenary money in the full release, but the online war scenario will be completely reset. Grand Kingdom will release for the PlayStation 4 and Vita on June 21 in North America and June 17 in Europe.