The new Simpsons title sequence has debuted on Hulu in HD! It seems like the writers have done a good job of splitting the difference between tradition and modernity.
They have kept the flavor of the original, but still added new elements that are more in keeping with the show's current incarnation. The biggest change is the incorporation of lots of the supporting characters. This first run of the title sequence is nearly two minutes long, but I imagine that it won't take up as much time on a regular basis: