Sunbreaker is the new Titan subclass in Destiny, added in The Taken King. It’s a flashy, fire-themed variant with a flaming hammer, that makes melee…

According to Tyson Green, Bungie Lead designer, Destiny’s rumored third subclass slot on each guardian’s character screen has another meaning

The first Destiny’s DLC “The Dark Below” is scheduled for December, but Bungie team still hasn’t unveiled any particular information about the upcoming update. Recent leaks posted by DLC tester, shed some light on this subject and reveals that a new raid, and the third subclasses might be unlocked.