Today EA showed off the new expansion pack for Sims 3 called Island paradise. You can watch the live stream below from the event. If video does not appear upon first impression try refreshing the page. The stream starts at the 2 minute mark for the replay.
For a full preview of the game we have also done one on the site and it is viewable via this link. It contains some screenshots and the trailer along with a more detailed description of the game.