Blizzcon 09 Goblin – Worgen
This information was taken from the Classes, Items and Professions Panel. You can go to http://www.blizzard.com/blizzcon/recaps/class_items_prof-panel.xml . For more information.

The Goblin
This panel began by taking a close look at the two new playable races being introduced for World of Warcraft: Cataclysm. The goblin race, available to the Horde, will be able to choose from all classes except paladin and druid. Goblins also have some very interesting racial abilities, including a rocket belt that allows players to activate one of two rocket abilities every two minutes.
The first ability enables the player to jump up to 20 yards, while the other shoots rockets at an enemy player within 30 yards. Additionally, every 30 minutes the goblin can summon a pack hobgoblin, which will act as a personal servant granting bank access.
Goblins also gain a bonus to their alchemy skill, and should a player decide to become an alchemist there will be an increased benefit from drinking health and mana potions.
Additional passive goblin racials include a permanent 1% increase to attack and casting speed, and because of their knack for mercantile affairs, goblins will always receive the best possible gold discount regardless of reputation.

The Worgen
The worgen, our new Alliance race — has both a true form and a human form. The true form is purely cosmetic, and provides no combat bonus. A player may remain in either form when out of combat, but are automatically placed in their true form upon entering combat.
Worgens have a racial ability called Darkflight, which allows the worgen to temporarily increase their movement speed by 70%, and can be used every three minutes. This activated ability, like entering combat, will also force the worgen into its true form. Other worgen racials include a passive 1% increase to all damage, reduced duration from the effects of curses and disease, and a bonus to skinning, as well as the ability to skin faster. Worgen will have access to all classes except paladin and shaman.

