Blood

New abilities Blood Tap The Rune Tap as well as Relish in Blood will be added with WoTLK Classic Gold.

Frost

Ability to choose between two 1-handed weapons or one 2-handed weapon.Frostwyrm Fury will be removed from the talent tree, instead being added as a base ability for the sub-class.Hypothermic Presence added as an ability.

Unholy

Summon Gargoyle is removed from abilities, but will be made a base attribute of this sub-class.Army of the Damned will feature a brand new minion, Magus of the Dead.Death Coil and Epidemic will decrease the Army of the Dead cooldown.Apocalypse will summon Magus of the Dead to fight alongside and against the Death Knight.Master: Dreadblade will help with the shadow damage of the Death Knight and minion.Demon Hunter Fury is the sole resource Demon Hunters use, with Immolation Aura to be available to both subclasses instead of just The Vengeance.

Havoc

This is a new ability, active Unending Hatred, expanding the max capacity of Fury.The talent Dark Slash is now Essence Break that deals Chaos damage and increasing damage caused via Chaos Strike and Blade Dance for a short time.

Vengeance

Demonic will be added as a talent option.Fel Devastation will now be a part of the Vengeance specialization baseline abilities.Metamorphosis form will be activated following a Fel Devastation.Multiple talents have been combined.Bulk Extraction will be added to the talent tree, ripping a soul fragment from up to five enemies at once and consuming them.Ruinous Bulwark will be added to the talent tree, increasing the healing properties of Fel Devastation with buy WoTLK Gold, converting all overhealing into an absorption shield.Druid Ferocious Bite, Barkskin, Cyclone, Stampeding Roar, and Ironfur will be available for Druids regardless of specialization. Each of the specializations will gain the ability to use it in addition to other utility abilities.