With Destiny's new expansion, The Taken King, each of the Guardian classes -- Titan, Warlock, and Hunter -- will be getting a third subclass to fill the damage type they are currently lacking. So for example, the Titan's subclass will be based on Solar damage, the Warlock's Arc, and Hunter's Void. With these new sublcasses come new Supers that'll surely aid you in the new adventures that await in The Taken King.
Following yesterday's announcement, Bungie has revealed and detailed each of the Guardians' new subclasses: Titan Sunbreaker, Hunter Nightstalker, and Warlock Stormcaller. Check out each of the new Subclasses abilities below:
Solar Titan Sunbreaker
"Incendiary siege engines of war, Sunbreaker Titans hammer and shatter their enemys ranks from afar, raining cleansing fire down upon fortified defensive positions."
Select Abilities:
Super: Hammer of Sol
Summon a flaming hammer and wreak destruction down upon your enemies.
Thermite Grenade
Grenade explosion sends a line of fire toward your target.
Sunstrike
Ignite your enemies with a heavy solar strike.
Fire Keeper
Hammer of Sol lasts longer and you gain an overshield while standing near a Sunspot.
Arc Warlock Stormcaller
"Stormcallers directly manipulate Arc energy, focusing body and mind to channel and chain the lightning. Their enemies are given fair warning flee from battle, or face the storm."
Select Abilities:
Super: Stormtrance
Chain Arc Lightning from your hands.
Storm Grenade
This grenade calls down a localized lightning storm.
Thunderstrike
Deliver an electrocuting melee strike at extended range.
Perpetual Charge
Getting a grenade kill recharges your melee. Getting a melee kill recharges your grenade.
Void Hunter Nightstalker
"All Hunters master the frontier, but none claim territory quite like a Nightstalker. Shadowshot binding may seem more merciful than gun or blade until the feeding frenzy begins."
Select Abilities:
Super: Shadowshot
Tether a large group of foes to a Void Anchor, slowing and suppressing them for your Fireteam.
Voidwall Grenade
Grenade explosion creates a horizontal wall of burning Void Light.
Smoke
Throw Smoke to slow and disorient those within its cloud.
Shadestep
Gain an evade to avoid damage.
Source: http://www.gamezone.com/news/destiny-the-taken-king-new-subclasses-detailed-sunbreaker-stormcaller-and-nightstsalker-3417732