“Monster Slaying” and “Humanoid Slaying” have been removed and replaced by the “Master Tracker” talent, which increases damage and critical strike damage caused against a tracked target by 1/2/3%.  
“Lightning Reflexes” has been increased to a 5/10/15/20/25% bonus.  
“Deflection” has been reduced to 2 ranks for a 2/5% bonus.  
“Improved Feign Death” has been changed to give “Feign Death” a 50/100% to remove all harmful effects.  
“Master Tactician” has been changed to give your critical hits with ranged attacks a 100% chance to increase your critical strike chance against the target by 2% for 8 sec. The effect stacks up to 5 times.  
“Clever Traps” now also increases the damage of “Snake Trap” by 15/30% against flying targets.  
“Kill Command” no longer triggers the global cooldown.  
“Feign Death” now properly de-aggros player pets.  
“Readiness” now properly finishes the cooldown on “Misdirection”.

--Pets
Warlock and Hunter pets will now respawn when its owner dismounts from a flying mount.

--PvP
 
Entering an arena will now grant the “Gladiator’s Resolve” buff that increases health by 20%.

-Druids
 
An Epic Flight Form quest has been added to the game. The Artisan riding skill is a prerequisite to beginning the quest.

--Battleground Matching System
 
A player matching system has been put into effect to encourage a more competitive player vs. player environment. The system will work by assigning a “gear rating” to every player for each honorable kill earned, based on the value of the player’s equipped items at the time. These ratings are averaged over many battles, and will be used by the system to match up players of similar strength in cross-realm battlegrounds.

--Raids and Dungeons
 
Tier 6 armor sets are now in the game.

This was just posted in the official forums and quickly deleted. Can't say if it's real or not.

"Crafted “Steam Tank” and “Flying Machine” mounts useable only by engineers."
 
d'accord... ce sent effectivement le fake.

Je ne le sens pas, juste à cause de ça :

Yep I'm Spybot. Well, I should say we’re Spybot. My co-worker and I are responsible for the 1.8, 1.12, fake druid BC talent screenshots, and the latest 2.1.0 patch notes. Writing these really pass the time at work
 
I don’t think I need to tell most of you that they’re all fake. The reason we write these is to present a list of suggestions that we think would improve the game. I’m sure Blizzard would rather us use the suggestions forum but obviously fake patch notes will get much more exposure. If you're curious at how we were able to put so many obscure bug fixes and technical stuff, we copied and pasted everything from the UI + Macros and Bug Reports forums. The rest was blue posts and our own input. The “KDM” shoutout was for Caydiem - sorry for all the headaches with the other patch notes. Anyhow while these patch notes are 100% fake, I hope you at least had fun reading it.