Blizzard updated some of the Spells and Talents in the Burning Crusade Beta. Here is an overview:

Paladin

• Vengeance - Increases damage by 2/4/6/8/10%, reduced from 3/6/9/12/15%
• Crusader Strike - Cooldown increased to 10 sec., from 6 sec. Should now have new icon.

Mage

• Molten Fury - Rank 3 removed. Ranks 1 and 2 unchanged.
• Elemental Precision - Changed to "Reduces the mana cost and chance targets resist your Frost and Fire spells by 1/2/3%."
• Empowered Fireball - Reduced to 3% per rank from 4%

Warlock

• Unholy Power - Reverted to "Increases the damage done by your Voidwalker, Succubus, Felhunter, and Felguard's melee attacks by 4/8/12/16/20%." It no longer increases Shadow and Fire damage.