Edit - I'd like to make it clear that these are not ALL the known issues for 2.0.1. These are some of the most commonly reported issues for patch 2.0.1 to this point in an effort to reduce the duplicate reports on this forum. -Averinn

General
- The patch notes released were not entirely correct for 2.0.1. You can find them below:
http://www.worldofwarcraft.com/patchnotes/

- Forum avatars do not match your in-game character.
- The tooltip color for an enchanted item is displaying incorrectly.
- Elemental Templars aren't able to be summoned in Silithus unless the player logs out and logs back in.
- The Kodo mount is missing an idle spacebar animation.
- In-game mouse speed isn't consistent with the desktop speed on a Mac.
- The self-cast hotkeys aren't able to bind to Alt - (dash).
- Certain throwing weapons are being consumed when used as a throwing weapon.
- The proc on the Ravager is not functioning properly.
- The zoom feature for Far-sight, Eagle Eye, and Far Sight is missing.
- In the PVP window, Today's Estimate Honor points doesn't show any information.

Battlegrounds
- It is possible to fear players through random walls in the Arena.
- The mouse-over for the Healing Done column of the BG scoreboard says 'Damage Done'.
- Joining a battleground queue for a specific instance of that battleground puts you in the first available queue.
- Players can be put in Arena groups with players of the opposite faction.

Druid
- Mangled stacked is reducing bleed effects beyond their base damage after they wear off.
- Talenting Mangle, while dead, does not properly teach the ability.

Hunter
- The troll tame beast quest cannot be completed unless the taming rod is equipped.
- Silencing Shot does not activate Auto-Shot after using the ability.
- The pet UI bar is appearing on screen, despite the pet not being resurrected with the - Hunter while in a battleground.
- Readiness isn't resetting the cooldown on Wyvern Sting and Flare.
- Hunter serpent pet animations are not correctly animating at long range.
- Casting Revive Pet while having an active hunter pet will immediately dismiss the pet.

Mage
- Blazing Speed does not always remove movement impairing effects.
- The Mage Water Elemental won't attack if rapidly set on passive mode.
- If a Water Elemental targeting reticule is active when the Elemental despawns, the - Mage will be unable to cast any other spells.
- Ice Block does not protect against Avengers Shield.
- The Mage fire talent Critical Mass is not updating the character sheet UI.

Paladin
- Holy Guidance is increasing multiple types of damage.

Priest
- Certain spells do not consume Inner Focus.

Rogue
- The Rogue talent, Adrenaline Rush is creating a large shadow on the ground when cast.

Shaman
- Lightning Shield can proc without the Shaman being hit.

Warlock
- Damage from environmental damage will cause Warlock's Nether Protection to proc.
- Soul Shards are being consumed while inside an Arena.
- Drain Soul is not creating Soul Shards when used to kill players in the Arena.
- Warlock Felguard is using the Sucubus voice.
- The Warlock Pet Spells: Tainted Blood Rank 4 and Rank 5 do not overwrite the first three ranks of the spell.

Warrior
- Warriors can be disarmed, despite placing talent points in the Arms talent "Weapon Mastery".

Blizzard Posts
You can also view posts that QA has responded to in this forum by using these links:

Hortus
http://forums.worldofwarcraft.com/search.html?forumId=10023&characterId=104601064&sid=1

Seismic
http://forums.worldofwarcraft.com/search.html?forumId=10023&characterId=104601068&sid=1