As we don't have any news at all, I have to copy / paste the news from Steam :

Heritage Update 1.1.0d

8 new cars
group 2: le gorde, la regina
group 3: la hepta, the pebble v1, the pebble v2, the zetto
group 4: la super montaine, la longana
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ghost cars
see your local ghost for your fastest times!
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livery mods
player-created liveries will be downloaded from Race Department. the liveries can be created from our templates with a .psd editor (photoshop, gimp, etc.), then exported as a png to add to the game files.
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main menu polaroids
photos you take in photo mode will be loaded into the polaroids in the main menu, so you can relive your favorite moments every time you boot up the game.
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more improvements
jump landings are much less bouncy
rotate cars in the main menu with the right thumbstick on controllers
view previous daily/weekly leaderboards

For the moment, the handling of the Longana is flawed : it drives like a "wet soap on the road". Even with all aids activated :-/