August 16 is the date. This day all players that couldn't play Paragon will finally be able to try it. If you missed the game's Beta weekends because of Battleborn or Overwatch, you would have a perfect opportunity to give Epic Game's mix of MOBA and FPS genres a try.
Other than that, the developers shared in their update that they are going to release a new hero each three weeks. Here's the trailer of the next hero, Khaimera. The hero seems to be a melee fighter and will be available starting June 21.