The next significant update to Blade & Soul is being readied for deployment on all servers on June 1, 2016. Called Vengeance Breaks, the update includes Silverfrost Mountains Act 4, Part 2; three new heroic dungeons; the "ultimate single player challenge" called Tower of Infinity; new pets; and Hongmoon Level 15.
We'll keep you posted as more information is revealed but in the meantime, head to the Blade & Soul site to learn a bit more.