It looks like the MTGSalvation crowd had it nailed.  Mark Gottleib gave us the entire rest of the list this morning, as well as som insight on the design on DailyMTG:

Come back later on today; Mr. P and I will be breaking down Commander’s Arsenal from top to bottom.  You knew this was coming, folks…
THE OFFICIAL LIST:

OVERSIZED-

*Azuza, Lost But Seeking
*Grimgrin, Corpse-Born
*Mayael the Anima
*Sliver Queen
*Karrthus, Tyrant of Jund
*Brion Stoutarm
*Glissa, the Traitor
*Zur the Enchanter
*Godo, Bandit Warlord
*Karn, Silver Golem

REGULAR-

*Sylvan Library (new art)
*The Mimeoplasm
*Dragonlair Spider
*Duplicant (new art)
*Command Tower (new art)
*Chaos Warp
*Loyal Retainers
*Maelstrom Wanderer
*Kaalia of the Vast
*Diaochan, Artful Beauty
*Rhystic Study
*Edric, Spymaster of Trest
*Vela the Night-Clad
*Decree of Pain (new art)
*Desertion
*Mirari’s Wake (2008 Pro Tour art)
*Scroll Rack
*Mind’s Eye (new art)

—>Cass