Pretty sure I'm allowed to post this, another member did this the other day with Templar class info, not going to say where this is from though obviously. Also this game is still in beta so anything could change, again obviously.

Elder Scrolls Online Beta – Armor Skills

Light Armor

Active Abilities

Annulment – unlocks rank 21
instant – self – 60 magicka – no cooldown
- absorbs 50% damage from spell attacks, up to a maximum of 36 damage

Passive Abilities

Evocation – unlocks rank 3
passive – self
- reduce magicka cost of spells by 3% per piece of light armor equipped

Recovery – unlocks rank 10
passive – self
- increase magicka regeneration by 4% per piece of light armor equipped

Spell Warding – unlocks rank 16
passive – self
- increase spell resistance by 10 per piece of light armor equipped

Prodigy – unlocks rank 36
passive – self
with a light armor set (5+ pieces)
- 10% chance for spells to cause critical damage

Concentration – unlocks rank 50
passive – self
- increase spell damage by 1% per piece of light armor equipped


Medium Armor

Active Abilities

Evasion – unlocks rank 21
instant – self – 60 stamina – no cooldown
- gain 30% dodge chance for 20s

Passive Abilities

Improved Sneak – unlocks rank 3
passive – self
- decrease the area where you can be detected by 5% per piece equipped
- decrease time to become hidden by 5% per piece equipped

Wind Walker – unlocks rank 10
passive – self
- increase stamina regeneration by 4% per piece of medium armor equipped

Athletics – unlocks rank 16
passive – self
- increase sprint move speed by 3% per piece equipped

Dexterity – unlocks rank 37
passive – self
With a full set of medium armor (5+ pieces)
- reduce the duration of incoming snares by 25%

Acrobatics – unlocks rank 50
passive – self
- decrease the stamina cost of roll dodge by 4% per piece of medium armor equipped

Heavy Armor

Active Abilities

Immovable – unlocks rank 21
instant – self – 60 stamina – no cooldown
- reduce all damage taken by 20% for 8s
- immune to knockback and disabling effects for the duration

Passive Abilities

Bracing – unlocks rank 3
passive – self
- reduce cost of bracing by 3% per piece of heavy armor equipped

Juggernaut – unlocks rank 10
passive – self
- increase power with melee attacks by 1% per piece of heavy armor equipped

Rapid Mending – unlocks rank 16
passive – self
- increase healing received by 1% per piece of heavy armor equipped

Resolve – unlocks rank 40
passive – self
with a heavy armor set (5+ pieces)
- reduce all damage taken by 4%

Constitution – unlocks rank 50
passive – self
- increase health regeneration by 3% per piece of heavy armor equipped

Nice information.