New Features
The pandarens are the new race.
The female model isn't done yet.
At level 10, you will get to choose between horde and alliance.
Pandaren Classes: Hunter, Mage, Monk, Priest, Rogue, Shaman, Warrior
Racial - Epicurean - Increase the stat benefits from food by 100%
Racial - Gourmand - Cooking skill increased by 15.
Racial - Inner Peace - Your rested experience bonus lasts twice as long.
Racial - Bouncy - You take 50% less falling damage.
Racial - Quaking Palm - You touch a secret pressure point on an enemy target, putting it to sleep for 3 sec.
Monk New Class
Brewmaster - Tank spec
Mistweaver - Healer, a healer who can stand up in melee and will let players experience a "new healing style"
Windwalker - Melee DPS
This is not a hero class, and it will start at level 1
The class is very martial-arts based
Lots of monk-only animations, the healer and tanks will have different stances they can stand in, etc ...
Monk Races - All of them except Goblin and Worgens
Monk Equipment
Leather Armor (Agility or Intellect)
They hit a lot with hands and feet
They will need weapons for some finishers: Staves, Fist Weapons
They will also be able to use 1H Axe and maces, swords
Healers will get off-hands, they don't want healers to use shields.
Monk Resources
Chi (energy) slowly regenerates and is only used for your Jab and Roll abilities.
Jab generates Light and Dark force, which are used for everything else. Some finishing move uses dark force, some use the light force.
No auto attack! Devs want you to have this street fighter feel where you punch a lot
Cataclysm Talents
Pro - The level 10 specs were really nice and gave you a role early in the game, definitely a keeper.
Pro - Removing junk from the talent trees was also a very good move.
Pro - Having some kind of choices for optional skills/subspecs worked out pretty well.
Con - You had a risk of "skipping" important talents
Con - There wasn't enough junk removed
Con - There wasn't enough choices, you might have a different final talent point than another combat rogue but it just wasn't enough. The cookie cutter build still persists.
Con - No enough customization, no true hybridization (Using a little bit of 2 different trees)
Con - Players got grumpy
Talent System 2.0
The talent system is gone! Ok, not really, but it's greatly changed.
You now have your class abilities, your spec abilities, and your talents.
You still choose your spec at level 10, and you get a spec ability at level 10. You will get additional spec abilities later. There are anything that you really need to function, they will just be given to you to make sure you have all the tools you need to have.
Example - Prot Paladin
LVL 10 - Avenger's Shield
LVL 20 - Hammer of the Righteous (Prot and Ret)
LVL 30 - Judgement of the Just (Passive)
Talents
There is not talent points or ranks.
There is one talent pree per class.
You earn talents every 15 levels.
You get to choose 1 out of 3 every time you get a new point, you can only pick one of them and can't go back to get the other ones.
There will be no mandatory talent. There won't be any cookie cutter build or anything, it will depend on what kind of optional ability you want.
You can now change talents as easily as you change glyphs.
More info in the Talent Tree Panel at 2:15
PvE Scenarios
PvE Scenarios are a way to give new interesting content that doesn't make sense in a dungeon content.
Scenarios are more about reusing parts of the world in interesting new ways, and introducing new types of PvE gameplay that we've never seen before like PvE battlegrounds.
They are short instances for a few players, the amount of players can vary depending on the scenario, some of them can be for 3 players.
You don't need the typical tank/heal/dps setup, you will just be able to enter and play your role no matter what it is.
It will be a staged experience where you will try to accomplish some greater goal
For example, a scenario might require you to kill 25 kobolds in stage 1, then find and return 4 goldshire children, and then kill the boss.
Developers would like to do PvE battlegrounds, where you will have to slay 50 alliance/horde soldiers, destroy 6 towers and the barracks, and then defeat the enemy General.
They could replace group quests.
It uses the same queue system as the dungeon finder
Since there is no role requirements, queues should be instant.
Challenge Mode Dungeons
Complete a dungeon in x minutes
To earn Bronze, Silver, Gold medals.
Gear levels are normalized, all your gear will be brought to the same level to make the competition even.
You can't just get better gear to overpower it.
It will reward sweet looking gear with no stats, and valor points!
Challenge Mode will reward you with very unique looking gear to show off how awesome you are to your friends
A new challenge dungeons UI will be added, you will be able to check your medals, your ranking, show what rewards you can unlock, etc ....
Pet Battle System
You will be able to collect, level, and battle with companion pets.
It will be accessible to all players.
Works with almost every pet
Pet Customization, you will be able to name your pet, give them visual abilities, etc ...
There will be "Wild pets", you can find them in the world and engage in battle with them. You will then be able to get that pet and add it to your Pet Journal.
Pets have random stats, some of them will be very good at tanking, some will have a CC ability, etc ...
Some pets will only be found during a specific season, while it's raining, or during the day or the night. Some of them will only spawn in the spring, when it's raining, in elwynn forest at night!
Most pets will become tradable, even after it's leveled, etc ...
Pets will be account wide
Your pet journal will display info on all your pets, including stats, skills, and also drop locations and lore info for the pets you don't have yet!
Winning battles earns you experience, and levels your pets.
You will learn new abilities. Every pet can use 3 abilities in a battle at one time.
Every time you level you will also increase the stats of your pet.
You will level multiple pets to build your team.
You have 3 battle slots, one for each pet in your team.
Pet Battle System - Battle
PvE and PvP Battles
It will be turn based.
A simple combat system.
Fight with a team of 3 pets
Queuing system, you will be able to find a fight pretty fast depending on the level of your pets.
Pet Battle System - Customization
You will finally be able to name your pets, and see that name in battle.
Items for your pets, you will have an item slot for your pet and might be able to socket gems in those items, etc ...
Individual builds of abilities and different teams.
Masters and Masters abilities, there will be different NPC pet masters in the world who will let you earn abilities when you beat them. For example, beating the master of mechanical pets will get you a new ability for your pet!
Dungeons
9 new dungeons in the new expansion
6 dungeons will be on Pandaria
Scholomance and Scarlet Monastery (Wings 1 and 2) will be back in Heroic Mode
Raids
3 new Epic raids!
They will feature two enemy races, the Mogu and the Mantid.
Raid Finder, Normal, and Heroic difficulties will be available for all raids from day 1.
World raid bosses will return!
More info will be available at the Raids & Dungeons Panel today.
Questing
Increased focus on max level content, it will reward you with Valor Points.
Incentives for dungeons/raiders to run quests and do outdoor/daily kind of stuff. For example finishing a quest might give you a buff for the day, and maybe that buff will let you roll on a loot that only appears to people with that buff.
More quest choices, and a lot less linear
No flying until max level, it's much easier to keep people on the ground and create interesting quests when you know people won't just fly away and drop on the boss.
Faction improvements, there will be group of factions and they will let you work for all factions from that group to get your rewards. This way you don't have to grind a single faction anymore.
PvP
New Battlegrounds (Not final yet)
Stranglethorn Diamond Mines - Payload style gameplay.
Valley of Power - Murderball
Azshara Crater - DOTA
New Arena - Tol'vir Proving Grounds
STV Diamond Mine
Goblin Mine below northern STV
Payload style gameplay
Escort mine cars to depot
Multiple tracks, you will get a lot of options and you will be able to decide which way you want the cart to go.
First to x resources wins
Valley of Power
Located in the Vale of Eternal Blossoms
Murderball style gameplay
Holding the object earns points
Multiple point zones, depending on where you're hiding you will earn more/less points
Object deals damage to holder
Damage increases over time.
Tol'vir Proving Grounds - Arena
Located in Uldum
Simple layout based on Nagrand arena
Sense of place in the world
Just a simple square with 4 pillars/statues, etc ...
Achievements
Allow achievements to be shared among all characters on the same Battle.net account, things such as the raid achievements and the ones which are difficult to get.
Allows to include new achievements such as "get all the professions to the maximum level"
Major Class Changes
Resilience
Devs like the way Resilience works in PvP, and how it gives a nice goal for players looking to progress/upgrade their gear in PvP
Resilience is a pretty huge barrier for people who want to start PvPing.
Resilience will become a base stat, and will increase a little every time you level.
Ranged Weapons
Hunter minimum range is gone!
Hunter melee weapon is gone!
Ranged slot for all other characters are gone.
Relics are gone.
Rogues and warriors can now throw their melee weapon
Wands become main hand weapons
Warlock
Unique resource for each spec.
Affliction will keep Soul Shards, they are currently not interesting enough but devs have cool ideas for them.
Demonology will get Demonic Fury, you build up Demonic Fury and you metamorphosize when you max your Demonic Fury. More skills will be added to Demon Form, etc ...
Destruction will get Infernal Embers. The destruction warlock who keeps getting casting fire spells get hotter and hotter and will eventually deal insane amount of damage, you can build it up pretty quickly and unleash your big spell.
Shaman
Buff totems are gone. It just wasn't very interesting to be the buff bitch of the group.
All totems are now utility
New totem examples:
Earthgrab totem - roots
Repulsion totem - repels
Bulwark Totem - absorbs
Druid
They always felt like they had 4 specs, so now they do.
Feral - Cat (melee dps)
Guardian - bear (tanking)
Some overlap between the two
All druids can still go cat or bear form.
All classes
Spell books cleaned up, got rid of more junk, the goal is to clean up action bars a little more without removing the fun things.
Rotations will be improved
Spells will be automatically learned, you won't have to go to your trainer anymore.
You will get a new spell at level 87, level 90 new talent point.
Talent trees should be fun, and you should have more choice than just a cookie cutter build.
und no auto attack eher SF style 
