Here are today's patch notes :

Druids

• Ferocious Bite: This ability now only uses up to 30 energy.

Hunters

• Kindred Spirits (Beast Mastery): This talent now grants 20% pet damage at max rank.
• Serpent’s Swiftness (Beast Mastery): This talent now grants 20% pet attack speed at max rank.
• Pets
  • Lava Breath now reduces the target's casting speed by 25%, down from 50%.
  • Poison Spit now reduces the target's casting speed by 25%, down from 50%.

Mages

• Arcane Power now increases damage and mana cost by 10%, cooldown reduced to 1 minute.
• Arcane Power and Presence of Mind now share a category cooldown. Arcane Power causes a 15 second cooldown. Presence of Mind, once consumed, causes a 1.5 second cooldown.
• Arcane Flows now reduces the cooldown of Presence of Mind, Arcane Power and Invisibility by 15/30%.
• Presence of Mind: The cooldown has been reduced to 2 minutes, (down from 3.)
• Slow (Arcane): now increases cast time by 30%, down from 60%.

Paladins

• The duration on all Seals has been increased to 30 minutes and can no longer dispelled.
• Divine Plea: The amount healed by your spells is reduced by 50% (up from 20%), but the effect can no longer be dispelled.
• Sanctified Seals: This talent no longer affects dispel resistance, but continues to affect crit chance.

Priests

• Inner Fire duration has been increased to 30 minutes and can no longer dispelled.

Rogues

• Hunger for Blood (Assassination): Now increases damage 5% per stack, (up from 3%.)
• Mind Numbing Poison now reduces cast time by 30%, down from 60%.
• Mutilate damage will now do 20% increased damage against poisoned targets, down from 50%.
• Slice and Dice: This ability now increases melee attack speed by 40%, up from 30%.

Warlocks

• Curse of Tongues: Now increases the casting time of all spells by 25% (Rank 1) and 30% (Rank 2), down from 50% and 60%.

Dungeons and Raids

• The Obsidian Sanctum
  • Changed the color of the fissure in the Obsidian Sanctum to be more visually distinct.

User Interface

• The “GM wishes to speak with you” alert/button, at the top of the screen, has been changed so that addons do not obscure it.
• A clickable chat message has been added that duplicates the GM alert/button.
• When a GM wishes to speak with you the Help Request minibar button will glow.
• For additional notes on Lua and XML changes please visit the UI & Macros forum .

Bug Fixes

• Fixed an issue where players using nVidia 3D glasses were unable to see spell cooldowns.
• Fixed a software mouse cursor bug that was causing the mouse curser to disappear from view when over certain UI elements.
• Fixed a player movement error in which other players were appearing to move erratically when traveling beside them.