Two more classes' info released last night:
Death Knight
Read more on Death Knights on the WoW Cataclysm ForumsNew Death Knight Abilities
Outbreak (level 81): Outbreak infects the target with both Frost Fever and Blood Plague at no rune cost. This ability allows death knights to apply diseases quickly when they are switching targets or when their diseases have been dispelled.
Necrotic Strike (level 83): Necrotic Strike is a new attack that deals weapon damage and applies a debuff that absorbs an amount of healing based on the damage done. For context, imagine that the death knight can choose between doing 8,000 damage outright with a certain ability, or dealing 6,000 damage and absorbing 4,000 points in incoming heals with Necrotic Strike -- the burst is smaller, but a larger overall amount of healing would be required to bring the target back to full health.
This ability is meant to bring back some of the old flavor from when death knights could dispel heal-over-time (HoT) effects. It also gives the class a bit more PvP utility without simply replicating a Mortal Strike-style effect.
Dark Simulacrum (level 85): The death knight strikes a target, applying a debuff that allows the death knight to copy the opponent's next spell cast and unleash it. Unlike Spell Reflection, Dark Simulacrum does not cancel the incoming spell. In general, if you can't reflect an ability, you won't be able to copy it either.
Rogue
Read more about Rogue changes on the WoW Cataclysm ForumsNew Rogue Abilities
Redirect (available at level 81): Rogues will be getting a new ability to help them deal with changing targets. Redirect will transfer any active combo points to the rogue's current target, helping to ensure combo points aren't wasted when swapping targets or when targets die. In addition, self-buff abilities like Slice and Dice will no longer require a target, so rogues can spend extra combo points on those types of abilities (more on this below). Redirect will have a 1-minute cooldown and no other costs.
Combat Readiness (level 83): Combat Readiness is a new ability that we intend rogues to trigger defensively. While this ability is active, whenever the rogue is struck by a melee or ranged attack, he or she will gain a stacking buff called Combat Insight that results in a 10% reduction in damage taken. Combat Insight will stack up to 5 times and the timer will be refreshed whenever a new stack is applied. Our goal is to make rogues better equipped to go toe-to-toe with other melee classes when Evasion or stuns are not in play. This ability lasts 6 seconds and has a 2-minute cooldown.
Smoke Bomb (level 85): The rogue drops a Smoke Bomb, creating a cloud that interferes with enemy targeting. Enemies who are outside the cloud will find themselves unable to target units inside the cloud with single-target abilities. Enemies can move inside the cloud to attack, or they can use area-of-effect (AoE) abilities at any time to attack opponents in a cloud. In PvP, this will open up new dimensions of tactical positional gameplay, as the ability offers a variety of offensive and defensive uses. In PvE, Smoke Cloud can serve to shield your group from hostile ranged attacks, while also drawing enemies closer without the need to rely on conventional line-of-sight obstructions. Smoke Cloud lasts 10 seconds and has a 3-minute cooldown.