Worried that the GT TV update was the only thing we’d see come August 1st?  Well, panic over, looks like the update (which is apparently 233MB) will see plenty of other cool stuff too, including tweaks to the physics and rules when racing online.  There’s still no private races, new tracks or weather, but we’re sure they’re coming.

Improvement in Download Speed

• Improvements in download speeds for online updates and content

Gran Turismo TV

• Start of PPV (Pay Per View) service
• It is now possible to fast forward, rewind, or move between chapters when viewing video content.
• It is possible now to have up to 8 simultaneous background downloads running at the same time.
• Individual downloads can now be paused or resumed.

Distribution of Expansion Data

• Instant distribution feature of My Page backgrounds added

Race

• Improvements in penalty judgments
• Improved physics during collisions between cars in Online races.

Time Trial

• The tire selection in Arcade time trials changed from “S2” fixed, to “N1-S2”

Ranking

• It is now possible to display top lap times in all courses in a list.
• Improvements in the user interface

Common Vehicle Physics

• Improved controllability when using S1-S3, and R1-R3 tires.
• Changed calculation rules for performance points.

Option

• Added [Standard Definition (SD) Display Size] in [Display Settings]
• Moved the [Temperature] unit setting from [Network] to [Units]
• Added Expansion Data settings and Advanced Download Option settings in [Network]

Sound

• 6 BGM tracks added

Online race network specifications changed

• Added port 5658 to the ports used in Online races.

Other

• Players matched in Online races now added to the [Friends] → [Players Met] menu within Playstation 3.
• The time and score from replays of time trials, drift trials, and distributed demo replays are now displayed after their replay. For distributed demo’s, the Online ID is also displayed here.
• Manual updated

Source.