General
Flying mounts can now be used in Ghostlands.
x Resilience scaling has been modified for linear returns, as opposed to increasing returns. Under the new formula, going from 30 resilience to 40 resilience gives players the same increase to survivability as going from 0 to 10. Resilience now scales in the same way armor and magic resistances do. A player with 32.5% damage reduction from resilience in 4.0.6 should see their damage reduction unchanged in 4.1. Those with less than 32.5% will gain slightly. Those with more will lose some damage reduction, increasingly so as their resilience climbs.

Classes

Death Knight (Forums / Cataclysm Talent Calculator / Skills/Talents)
x Raise Ally has been redesigned to be a battle resurrection, analogous to Rebirth. It is instant cast, but costs 50 Runic Power to use, and has a 10-minute cooldown. It shares the same global battle resurrection cap with Rebirth and Soulstone.

Blood
x Blood Shield now only works while in Blood Presence.

Frost
x Frost Strike now deals 130% of weapon damage, up from 110%.
x Howling Blast damage has been increased by 20%. To compensate, the area-of-effect splash now does 50% of the single-target damage, down from 60%. The net result of this change leaves the area-of-effect damage roughly the same as 4.0.6 numbers.

Glyph
x Glyph of Raise Ally is now Glyph of Death Gate, and makes Death Gate cast 60% faster.

Druid (Forums / Cataclysm Talent Calculator / Skills/Talents)
Cyclone duration has been reduced to 5 seconds, down from 6.
Lifebloom's bloom effect has been reduced by 20%. In addition, it now costs 11% of base mana, up from 7%.
Stampeding Roar's duration has been increased to 8 seconds, up from 6. The movement speed effect has been increased to 60%, up from 40%.
x Swipe (Bear) cooldown has been reduced to 3 seconds, down from 6.

Balance
Starsurge damage has been reduced by 20%.

Restoration
x Gift of Nature (passive) also reduces Tranquility’s cooldown by 2.5/5 minutes.

Paladin (Forums / Cataclysm Talent Calculator / Skills/Talents)
Holy
Aura Mastery: This ability no longer increases the benefit granted by Crusader Aura.

Priest (Forums / Cataclysm Talent Calculator / Skills/Talents)
Inner Will and Inner Fire now last until canceled.

Discipline
It is now possible to remove Weakened Soul effects that were a result of another priest's Power Word: Shield through Strength of Soul.
x Power Word: Barrier's cooldown has been increased to 3 minutes, up from 2, and its effect has been reduced to 25%, down from 30%.

Warlock (Forums / Cataclysm Talent Calculator / Skills/Talents)
Affliction
Haunt damage has been increased by 30%.
x Shadow Mastery (passive) has been increased to 30%, up from 25%.

Demonology
Mana Feed now restores more mana (four times as much) when the warlock is using a Felguard or Felhunter.

Pet
Doomguard's damage has been increased by 50%. The Doomguard is intended to be the best guardian for single-target damage, and the Infernal the best when there are multiple targets.
x Shadow Bite (Felhunter) damage and effect has doubled.

Warrior (Forums / Cataclysm Talent Calculator / Skills/Talents)
Heroic Throw is now available from trainers at level 20.
Pummel is now usable in all stances.
Shield Bash has been removed from the game.
Spell Reflection cooldown has been increased to 25 seconds, up from 10.

Arms
Juggernaut no longer adds 2 seconds to the Charge stun, but instead lowers the cooldown of Charge by 2 seconds (to 13 seconds total without the glyph).
Lambs to the Slaughter now causes Mortal Strike to refresh Rend in addition to its current effects.

Fury
Flurry haste bonus has been doubled to 16/32/50%.

Protection
Shield Mastery no longer affects the cooldown of Spell Reflection, however, it now allows Shield Block to reduce magic damage as well.
Gag Order now only affects Heroic Throw.

Glyphs
Glyph of Spell Reflection reduces the cooldown of Spell Reflection by 5 seconds, up from 1 second.

Warrior (Forums / Cataclysm Talent Calculator / Skills/Talents)
Heroic Throw is now available from trainers at level 20.
Pummel is now usable in all stances.
Shield Bash has been removed from the game.
Spell Reflection cooldown has been increased to 25 seconds, up from 10.

Arms
Juggernaut no longer adds 2 seconds to the Charge stun, but instead lowers the cooldown of Charge by 2 seconds (to 13 seconds total without the glyph).
Lambs to the Slaughter now causes Mortal Strike to refresh Rend in addition to its current effects.

Frost
x Frost Strike now deals 130% of weapon damage, up from 110%.
x Howling Blast damage has been increased by 20%

Inner Will and Inner Fire now last until canceled.