EA have just put out a press release stating a date for the release of The Sims 3. The game

will be available at retailers worldwide and available by digital download on February 20, 2009

Along with that a special collectors edition was announced:

The Sims 3 Collector’s Edition will also be in stores on February 20, 2009. The Sims 3 Collector’s Edition will include the full game along with additional collectable The Sims merchandise and a bonus in-game Italian-Style Sports Car unavailable elsewhere. A limited number of copies of The Sims 3 Collector’s Edition will be available worldwide, and those who pre-order the product from select retailers will receive an additional exclusive in-game vintage sports car and a collectible poster that is a first look at the neighborhood, all available while supplies last.