Islands of Nyne is a Battle Royale game from Define Human Studios that isn’t a quickie bandwagon jumper but instead has been in development since 2015.
Io9 takes place in a sci-fi setting, is first person only and has a focus on “skilled” game play as opposed to PUBG’s realistic approach. This basically boils down to high flying, highly accurate shooting in an unpredictable environment. Or as Gen X calls it: “Arcade Style”.
The game goes into early access on Steam June 12th and will stay for one year. It’s also confirmed to be coming for the Xbox One but no release has been announced yet. Seeing how it will likely drop into the Game Preview program, expect it sooner than later.