Originally Posted by GeneralPloKoon
The game doesn't need to be finished though, i'm sure many expansion packs are going to be released.
There is a difference between beta and finished.
In truth, you cannot finish an mmo. It just eventually dies. Thus why you constantly work in a never ending late beta stage.
World of Warcraft is still being patched, fixed, updated, etc every month with new things to keep it going. I don't know the exact number, but its still in its beta run.
Expansion packs simply add more, and if you spend time and effort on the game you shouldn't need to patch it with expansions. World of Warcraft was more than big enough before its expansions, and now its grown too large for comfort.