New patch today v1.06 allows remote races for B-Spec through the Gran Turismo website and allows tracks from the Course Maker to be used in online races, and give you more experience points. It also supports multi-monitor, multi-PS3 setups, and optimizes the speed at which games are saved.
http://us.gran-turismo.com/us/news/d5552.html
Yeah, its a nice patch. Really improves the game.
Some things I really liked:
Improved the Online Salesroom (looks like they've about double the cars you can find there)
Steering sensitivity adjustment for the joysticks (big help as too many cars weren't steering right I felt)
Fully Customizable Transmission finally is (can adjust individual gears now)
Power Output tuning option (adjust output 50-100%, big help for some cars, and can help you for races where output is restricted).
Weight Ballast tuning option (can add weight to help with weight balance)
There's some other things like AI adjustment and Rewards and Experience adjustments (seems like they've lowered credits some but upped experience).
The saving is definitely sped up and so overall its snappier to get around. Load times over time have gotten a lot better for me (just in general not from this patch), although they could still tweak the interface to speed things up (get rid of the unnecessary crap like the Delivery Truck).
Personally, there's still a ton of stuff I hope they change (in my opinion "fix"), but this update makes a lot of improvements, so if they keep at it like this, won't be too long before it might live up to what I felt it should have been from the start.