Major Nelson brings news of another backwards compatability update. This includes 66 new or updated games in the U.S. and Japan.

From Major's blog:

July 2007 Back Compat update
Whiule I've been crazy busy down here at E3, the team back in Redmond has been busy with a Back Compat update update. (yea, it was a surprise to me too!) The latest backwards compatibility update is now available over Xbox Live (or will be very soon.) This free update brings the complete list of original Xbox games that you can play on your Xbox 360 to way 300. Remember, your original Xbox games will look better than ever on Xbox 360 running in 720p and 1080i with anti-aliasing. You can also play cross-platform between Xbox 360 and the original Xbox over Xbox Live.

When I get back to Redmond next week, I'll kick out an updated PDF file that will contain ALL the updates. For now, here is what the July ''07 update contains:

Title Name Type Notes
America's Army New
Auto Modellista New
Bass Pro Shops Trophy Hunter 2007 New
Blinx 2 New
Bloodrayne 2 New
Burnout New
Crash Bandicoot 4 New
Crash Bandicoot 5: Wrath of Cortex Updated
Doom 3: Resurrection of Evil New
Drive to Survive New
Drive to Survive (EM) New
ESPN College Hoops New
ESPN NHL 2K5 New
Evil Dead Regeneration New
Exaskeleton New Japan only
FIFA Street 2 New
Full Spectrum Warrior: 10 Hammers New
GUILTY GEAR XX #RELOAD New
Harry Potter: And the Chamber of Secrets New
Harry Potter: And the Prisoner of Azkaban New
Hot Wheels: Stunt Track Challenge New
Jet Set Radio Future Updated
Justice League: Heroes New
King Arthur New
Kingdom Under Fire: The Crusaders New No Live Access
Magic: The Gathering: Battlegrounds New
Marvel Nemesis: Rise of the Imperfects New
Marvel vs. Capcom 2 New
Mech Assault 2 New
MLB Slug Fest 2003 New
Morrowind New
MotoGP2 New
Myst III: Exile New
NBA Live 2002 New
NCAA Football 06 New
Nobunaga no Yabou Ranseiki New Japan only
Outlaw Golf 9 More Holes of X-mas New
Outlaw Volleyball: Red Hot New
Outrun 2 New
Outrun 2006: Coast to Coast New
Pac Man World 3 New
Panzer Elite Action: Fields of Glory New EMEA only
Pro Cast Sports Fishing New
Project Gotham Racing New
Project Gotham Racing 2 New
RoadKill New No Live Access
Rogue Ops Updated
Sega GT 2002 Updated
Sega GT Online New
Shadow Ops New
Showdown: Legends of Wrestling New
Silent Hill 2: Dreams New US/EMEA only
Sponge Bob Square Pants: Lights, Camera, Pants! New
Teenage Mutant Ninja Turtles: Mutant Melee New
The DaVinci Code New
The Sims 2 New
The Urbz: Sims in the City New
Tony Hawk's Pro Skater 2X New
Tony Hawk's Pro Skater 3 New
Transworld Surf New
Trivial Pursuit Unhinged New
Winning Eleven 8 New
Without Warning New
WWE Raw New
Yu-Gi-Oh! The Dawn of Destiny New