This is the North American / Oceanic version. So don't waste your time if you are looking for the Euro version :/
While downloading the torrent, feel free to upgrade your account with the authentication key: WoW Upgrade Site
If you have not yet purchased an authentication key, Amazon still has them available.
This is NOT a hacked, cracked, or any other non-authentic version of the game disk.
You MUST have purchased WOTLK to download and use the ISO (let alone play the game ;)
WARNING!!! There have been reports of user interface glitches when installing the expansion. I would recommend waiting for release BEFORE installing the expansion. Generally, the game still operates. Therefore, install the expansion ONLY if you do NOT intend to play until the actual release date/time.