The release date for SWTOR is December 20, 2011 in North America. The game is currently in the beta testing phase. Although all the bugs will hopefully be worked out before the release date, it is quite possible that a few will slip through. In addition, after the game is released we can expect to see new content being added over time and tweaks being made to balance gameplay. When these changes are made, the developers will make changes to the game and will push them out in patches to the players. The patch notes will describe what changes have been made.
We’ll start seeing patch notes after the game is released, and we’ll be posting them here as they become available.