I'll edit the original post here to incorporate information as it becomes available. Please keep this thread to legitimate announcements only - we've had enough speculation.

Announced changes to date:



- 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.

* 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 (/cheer Tigole).

* More Badge of Justice rewards to be added.

* A new portal to access the Caverns of Time will be made available to players via Keepers of Time reputation.



- 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.

* Horde starting tunnel moved further back in Alterac Valley.

* The General and Warmasters in Alterac Valley for each faction will receive a stacking buff from each other that boosts their health and damage.

* Balinda Stonehearth in Alterac Valley will have new abilities. Balinda and General Vanndar Stormpike's additional health will be removed.

* Repeatable Battleground quests to be added.



- 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.

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.

* The Raid UI now can display the range of players relative to you.

I thought (before WoWBlues died) that the post said Kazzak and Doomwalker would have their gold drop increased (in addition to the BoE loot), not all 25 man bosses (who are getting extra set tokens).

Yah here it is.

It has a cooldown of 24 hours, it's not like you're going to liquidate them all overnight, but still.

Have you got a source for that enchanting recipe? can't seem to find it anywhere.

edit nm found it -_-

davel: WoW Forums -> Transmute: Void Crystal into Large Prismatic

Not really that awesome. As it stands it only takes a few weeks to completely deck out a raid. The real problem is the non token pieces.

Updated to reflect the Heroic gem and summoning changes.

"In 2.4, Spell Haste will reduce the global cool down on spells, down to a minimum of 1 second. It won't apply to melee and ranged abilities though however."
Source

Added to the OP.

Hot sauce. Now we do not have to wait 5 minutes to replace LDs or backups, and we are just starting HJ.

Considering most guilds only kill Vashj/Kael the half-dozen (or less) times they have to for attunements, a 50% increase in number of tokens is pretty substantial.