Jaded Grinder

Some information was compiled on the European forums about all the confirmed fixes for 2.1:

3.1 Compiled list (Patch 2.1)

General

Talents, Skills & Classes
* Feign Death fix
* New Rogue Stealth animation
* More Humanoid Succubus CC

Dungeons, Battlegrounds & PvP
* PvP Matching system
* The Black Temple (aka the Black Citadel)
* Gruul’s Lair changes

Professions & Items
* Golden Hare fix
* Spellcloth fix

User Interface
* Auction House Gem-section

Lands, Reputation & Events
* Flight path changes
* Blade's Edge Mountain graveyard

Features

Misc
* Draenei quest drop fixes

and the current list of "future" content and fixes as per CM comments/posts:

3.3 Compiled list (Future)

General
* Die in mid-air fix

Talents, Skills & Classes
* Priest’s Circle of Healing
* Additional Hunter’s Pet spells
* Warrior’s Deep Wound fix
* Druid epic flight form
* Warriors PvP changes
* Shamans’ Elemental threat and Sustainability changes
* Hunters’ Survival tree changes
* Better Paladin tanking
* "Charge", "Intercept", and "Intervene" will remove snaring effects

Dungeons, Battlegrounds & PvP
* Zul’Aman
* Arena PvP spectator
* Exalted with all 3 Battlegrounds rank fix
* PvP Elekk and Hawkstrider

Professions & Items
* Profession revamps
* Flying Netherdrakes
* TBC raiding Tier changes
* Socket scaling

User Interface
* PvP LFG-system addition
* Visual spell timers for classes

Lands, Reputation & Events
* Sunwell Plateau

Features
* Guild Bank
* Guild Housing
* Dismiss pets upon flying
* Last name for character names
* Mini-games

Misc
* Talbuk mounts sound