Here is a summary of the changes in patch 3.2. These do not include class or profession-specific changes. For those you will need to read up!
All heroics and raids that dropped emblems of heroism or valor will now drop Emblems of Conquest instead! Player still needing heroism or valor emblems may convert the emblems of conquest to either of those.
The daily heroic quest will now reward TWO Emblems of Triumph while the daily normal quest will reward one emblem of conquest.
Lots of changes to Agility, Dodge, Parry, Block and Resilience. Check your stats!
Mounting time has been reduced from 3 to 1.5 second.
Items with mana regen now grant about 25% more regen.
The new Flask of the North increases your spell power, attack power or strength for 1 hour. It is not consumed when used but can only be used by alchemist. Boooooo!
New battleground: Isle of conquest.
New rewards from the argent tournament quests, including a teleporting tabard, that will instantly take your to the tournament grounds in Icecrown. A mounted squire that can run bank, mail and vendor errands, a new heirloom chest granting an extra 10% to ALL experience gained on characters below level 80 (yes, it stacks with the shoulders too!) and a new paladin-only mount, because its so clear paladins have always been mistreated by Blizzard...
Items you get from looting bosses can now be traded with other players for up to 2 hours, helping with people getting or being awarded the wrong loot.
New art for druid's bear and cat forms.
Players will now get leveling XP from battlegrounds.
Players can decide to stop getting XP from quests and killing creatures and restart when they decide. Useful for twinks.
A maximum number of players for Wintergrasp will now be enforced to help reduce lag while fighting. Players will also enter a queue for Wintergrasp and may teleport there from anywhere.
You can now fly over both Wintergrasp and Dalaran without being dismounted, as long as don't fly too close to the ground.
Raids duration can be extended to allow players to complete a raid. For example, instead of resetting on the next Tuesday, players can extend their Naxx instance lockout for another 7 days, allowing them to finish all the bosses over a two week period.
The chef’s Hat allows a player to cook faster!
New recipes for most professions.
Mote extractor allows player to see clouds on the minimap, removing need for goggles or other devices to track them.
Engineers will be able to access the Auction House from Dalaran!
Bullets and Arrows can now be produced at a much cheeper cost.
Fishing in Northrend has a chance to get a recipe from the daily fishing quest.
All potions will now stack to 20.
You can now fly in Wintergrasp between battles.
A whole bunch of new gems to put in your gear! You better have your checkbook handy...
