Many Thanks to Nascarfan for posting photos of the checklist he picked up at Comic-Con. There are a few surprises on the list; presumably all will be out before the end of this year.
The list does not include lights & sounds, metallic specials, synthetic rubber tire Kmart cars and the die-casts included in various games and puzzles.

2011 Die-Cast Collector Checklist

Character Cars
Race Team Mater
Finn McMissile
Lightning McQueen
Francesco Bernoulli
Holly Shiftwell(sic)
Raoul Caroule
Professor Z
Carla Veloso
Race Team Guido
Race Team Luigi
Acer
Grem
Race Team Fillmore
Race Team Sarge
Rod Torque Redline
Miles Axelrod
Petrov Trunkov
Hydralic Ramone
Nigel Gearsley
Max Schnell
Shu Todoroki
Miguel Camino
Lewis Hamilton
Carlo Maserati
Hudson Hornet Piston Cup Lightning McQueen
Mel Dorado

Exclusive Cars (Found only in 1:55 die-cast multipacks)
Zen Master
Brent Mustangburger
Lightning McQueen w/Party Wheels
Damaged Rod Torque Redline
Uncle Topolino
Tomber
Security Guard Finn
Sal Machiani
Guiseppe Motorosi (Alfa Spyder, Bernouli's crew chief)
Cruz Besouro (VW Bettle, Carla's crew chief)
John Lassetire
Tyler Gremlin
Fred Pacer (Fred Fisbowski?)
Mater w/Spy Glasses
Finn McMissile w/Weapon
Wasabi Mater
You Da Bomb Mater
Ronnie Del Cooper
Frank Clutchenson (blue & white Fiat 500, Bernouli's fan)
Darrell Cartrip
Denise Dream
Okuni (pink Geisha)
Shiseko (blue Geisha)
Yamiko (lavender Geisha w/parasol)
Ivan Mater
Fillmore w/headset
Uncle Topolino w/tires
Tomber w/oil can
Damaged Rod Torque Redline w/Boot
Pit Crew Mater
Leland Turbo
Mama Topolino

Deluxe Cars
Submarine Finn McMissile
Red
Holly Shiftwell w/Wings
Topper Deckingham (double decker bus)
Kingpin Nobunga (purple Sumo)
Pinion Tanaka (blue Sumo)
Hydrofoil Finn McMissile
The Popemobile
Pope Pinion IV
The Queen

Super Chase die-cast vehicles coming in 2012
rare 1:55th scale die-cast vehicles
collect them all… if you can

That's cool of you to copy down the list, John. I am scared by this term "Super Chase" cars!