King of the Hill season 2 will be released on DVD on November 11. Tvshowsondvd.com just listed the extras, along with the cover art at http://www.tvshowsondvd.com/newsitem.cfm?NewsID=571 ; The extras are:
Disc 1 Commentary on episode 5E05 (Husky Bobby) by Peggy, Bobby and Luanne director's intros: 5 episodes 6 deleted scenes featurette: Animation Evolution "Monsignor Martinez" easter egg
Disc 2: Commentary on episode 5E07 (The Man Who Shot Cane Skretteburg) by Dale, Bill and Cotton director's intros: 4 episodes 5 deleted/extended scenes featurette: The Arlen School of Drawing
Disc 3: Commentary on episode 5E15 (Three Days of the Kahndo) by Dale, Bill and Kahn director's intros: 4 episodes 5 deleted/ extended scenes still gallery: "The Boy Ain't Right" (excerpts from the book)
Disc 4 Commentary on Episode 5E18 (Leanne's Saga) by Peggy, Bobby and Luanne director's intros: 4 episodes 6 deleted/extended scenes featurette: "Music Inspired by The Hills" 2 animated music videos and 8 static pages with music KotH Game "Boomhauer" easter egg
I would have to conclude that Mike Judge just doesn't want do audio commentaries (since all the other regulars appear to be contributing to the commentaries this time).