Road Courses
Le Mans Circuit de la Sarthe (3 with buggatti)
Daytona International Speedway (2)
Top Gear test track (3: short, long, drag strip)
Eiger Nordwand and Eiger Nordwand confirmed extended (4 with reverses)
Fuji Speedway F & GT (4 with 80´s and 90´s like GT4)
High Speed Ring (2)
Indianapolis Motor Speedway (2)
Nurburgring GP-Strecke, Nordschleife, & 24h (3)
Suzuka Circuit & Suzuka East Course (3 with west course)
Tsukuba Circuit (1)
City Tracks
London Short and confirmed Long (4)
Madrid (2)
Rome (2)
Route 5 (4 with clubman)
Tokyo Route 246 (2)
Snow/Dirt
Tuscany (1)
Stelvio Pass, from the FT86 trailer (1)
Snow track, probably Chamonix or Ice Arena (2 with the reverse, since they are fictional)
And now let´s take educate guesses to fill this up:
Spa Francorchamps (1)
Monza (1)
Laguna Seca (1)
Those tracks had stickers on PD headquarters, that means they went there to scan/shoot, so it fits in the "educate guess" department.
So far 21 tracks and 48 layouts.
Those are the ones missing, most notably:
Autumn Ring
Apricot Hill
Deep Forest
Trial Mountain
El Capitan (this one appeared on previous GT Vision and GT HD trailers)
Grand Valley Speedway
Seattle
New York
SSR11
Midfield Raceway
Those are just the more popular ones, but even after that, we have tracks like Valencia, which was licensed but they didn´t had time to put it on GT4, so it´s on GT PSP and TT.
Do you think they would get a real track just to show up on side projects?
Well, 20+ could mean a lot, but even if it´s a misleading message like it was on GT PSP (they said over 30 tracks and we ended up getting 45 with 72 variations), we would still be missing some important tracks.
I thought about making a thread, don´t know if anyone agrees, but now that we´ve seen standard cars, it´s time to ask for standard tracks, to make sure we get our favorites in it.
I know we haven´t seen the final track list, and we can´t judge, BUT, the only way to have all of our favorite tracks is to ask beforehand, since PD still has 5 months to think about it and re-use the assets from those tracks.