ABC News is reporting that the two Bens -- Lyons and Mankiewicz -- are out and A.O. Scott and Michael Phillips are in. Story here. Lyons in particular had a reputation as a lightweight -- having declared "I Am Legend" is one of the greatest movies ever made. And when anyone can blog his or her thoughts about movies (cough, cough), the new hosts give the show a seriousness that should make the discussion more interesting.
Should, I said. No guarantees.
But if you want to see the show the way it should be (and was), go to this archive and look back at reviews from the Siskel-Ebert golden age.