I remember the cautious optimism when it was confirmed they were making a Simpsons movie. Then, it was leaked they were targeting 2008 for the films release. Marked on my Google calendar now is July 27, 2007, the scheduled release date.
Tonight, the trailer will air during a new episode of The Simpsons. You know when and where. Also, I'm told at some point after 5pm Toronto time http://www.apple.com/trailers/fox/thesimpsonsmovie/trailer/ will spring to life with the very same trailer.