The latest version of Gran Turismo 5, 1.11, is now available as a free download, weighing in at 62MB. As Kazunori Yamauchi previously announced, this minor update is focused on fixing bugs and glitches within the game, with more “features and content” expected to arrive in the next few months.

v1.11 also brings a new NASCAR Seasonal Event, featuring Jeff Gordon’s racing suit and helmet as a special prize. New time and drift trial have also been made available, along with a batch of new cars in the Online Car Dealership (thanks to EliteDreamer for compiling this list, with prices):

• Honda CIVIC 1500 3door CX ’79 – 4,785
• Nissan BLUEBIRD Hardtop 1800SSS 9910) ’79 – 6,340
• Honda 1300 Coupe 9 S ’70 – 6,400
• Mitsubishi Lancer 1600 GSR ’74 – 7,100
• Honda Z ACT ’70 – 7,900
• Mitsubishi GALANT GTO MR ’70 – 10,900
• Nissan SKYLINE 2000GT-B (S54A) ’67 – 11,900
• Nissan BLUEBIRD 1600 Deluxe (510) ’69 – 12,850
• Honda N360 ’67 – 18,000
• Subaru SUBARU 360 ’58 – 18,000
• Nissan SKYLINE 1500Deluxe (S50D-1) ’63 – 18,400
• Mazda Carol 360 Deluxe ’62 – 19,250
• Isuzu 117COUPE ’68 – 19,450
• Isuzu Bellett 1600 GT-R ’69 – 21,000
• Nissan SILVIA (CSP311) ’65 – 22,500
• Mitsubishi Lancer 1600 GSR Rally Car ’74 – 25,000
• Nissan Fairlady 2000 (SR311) ’68 – 27,500
• Nissan 240ZG (HS30) ’71 – 27,500
• Honda S800 ’66 – 29,000
• Honda S600 ’64 – 30,000
• Honda S500 ’63 – 31,250
• Mazda Cosmo Sport (L10B) ’68 – 34,400
• Mazda Cosmo Sport (L10A) ’67 – 37,000
• Nissan SKYLINE HT 2000GT-R (KPGC10) ’70 – 40,000
• Nissan SKYLINE 2000GT-R (KPGS110) ’73 – 42,500
• Nissan BLUEBIRD Rally Car (510) ’69 – 62,500
• Honda S800 RSC Race Car ’68 – 125,000
• Nissan SKYLINE Sport Coupe (BLRA-3) ’62 – 160,000
• Dome-ZERO Concept ’78 – 250,000
• Gran Turismo Formula – 2,500,000

http://www.gtplanet.net/gran-turismo-5-update-1-11-goes-live-with-jeff-gordon-nascar-seasonal-event/

Forgot this game had NASCAR.

Don't know why Sony didn't actively show off this portion of GT5 here in America.  NASCAR is insanely popular here and it would have performed much better if Sony had!

SWEET! MUST GET THE JEFF GORDON OUTFIT :D

I just love the NASCAR part.

NASCAR is awesome, but the OLCD sucks. But thanks Kaz these updates have kept me playing this game at least once a week so support from PD is mush appreciated.

Rumors about free DLC comming.

agreed and its not to late.

ot: this is unrivaled suport. 

They should make some more American cars available

Another update (1.12) less one week after the 1.11.

Update v1.12 continues with the bug-fixing theme, though the only documented change is a correction to a glitch with the Limited Slip Differential controller for FF cars. As such, this update is very light, weighing in at only 13MB. Thanks to all of you who sent this in so quickly!