Announced changes to date:

(in bold are what I see as the changes that will impact us most)

- General -

* Introduction of Sunwell Plateau (25-man raid instance) and new 5-man dungeon, as well as related faction.

* Loot from the Burning Crusade world bosses (Doom Lord Kazzak and Doomwalker) will now be Bind on Equip.

* 25-man raid bosses will now drop 3 tier armor set tokens per kill.

* Reputation gain rate in Battle for Mount Hyjal increased.

* Gems from Heroic dungeons are no longer Unique-Equipped.

* Spell Haste will reduce the global cool down on spells, down to a minimum of 1 second (doesn't apply to melee and ranged abilities).

* When you loot a Bind on Pickup item that only you can pick up (such as Heroic Badges) you'll no longer see the confirmation dialog. When you loot a Bind on Pickup item the confirmation window is going to list the name of the item in the window.

* Daily quests for Fishing will be added in 2.4. (I know Kaj and Pix will love this one!)

* Ranks of spells acquired by talents (e.g. Mortal Strike) will not need to be re-trained upon further respecs.

* Items intended for Retribution Paladins have had their stats adjusted.

* The inability to summon in Netherstorm will be removed.



- PvP -

* There will not be diminishing return calculations on honorable kills in 2.4. No honor will be awarded for killing players with Resurrection Sickness, or for killing a player who has died 50+ times in the same Battleground.

* Honor calculations will now happen instantaneously, as opposed to nightly.

* Stealth detection in Arenas will now debuff the player with a 5% increased damage taken effect, as opposed to the previous DoT effect.

* Players will now be able to purchase level 70 Superior quality PvP items from reputation vendors.

- Professions -

Enchanting:

* A new recipe, allowing the Enchanter to split 1 Void Crystal into 2 Large Prismatic Shards, will be added.

- Classes -

Druid:

* Lacerate will now scale with Feral Attack Power.

Mage:

* Conjured Manna Biscuit is now Unique (80).
* Spellsteal will no longer overwrite buffs that have a longer duration.

Priest:

* Fear Ward castable in Shadowform. (woohoo)

Shaman:

* Healing Grace will reduce the chance that all of your spells will be dispelled by 10/20/30%.

Warlock:

* The ability to summon players directly into instances with Ritual of Summoning will be re-enabled in 2.4

Warrior:

* Off-Hand weapon critical hits from Whirlwind will trigger Flurry and Rampage.
* Endless Rage to provide significantly more Rage.

- User Interface -

* Interface options changes will allow AddOn authors to interact more readily with the game interface, decreasing the likelihood of integration bugs or AddOn 'taint'.

* The combat log system will receive a dramatic overhaul.