GMT announced on the Kickstarter Page for Thunder Alley that there will be an extra exclusive track for all preorders (all P500 and KS backers).
If you add in the track expansion also available as an extra over at KS that makes for 5 tracks!
From their KS update:
We are pleased to announce that there will be an exclusive bonus race track that will be added to the game for all pre-orders (P500 and Kickstarter) if the Kickstarter campaign is successful. This track will automatically be included with your game.
While details of the exclusive track are forthcoming, please chime in below in the comments section with any thoughts or suggestions that you have for Jeff as he will be designing the bonus track. (Please, no requests for moats, trenches, supply lines to your pit crew, or ramps over flaming pits of oil.)
Here is a reminder of the current tracks in the game:
Super Speedway (base game)
Short Track (base game)
Road Course (expansion)
Triangle Track (expansion)
Please ask yourself what you would like to see in the bonus track and share those details below.
So GMT are also asking for feedback on what the new track could look like. Great stuff!
It looks like they are also considering some campaign/season rules - which would be awesome!