We'll get once more to have those sneak peaks in the development of our favorite sim, with the last announcement made by Kunos team. For every 1k Likes, a new set of images will find their way onto the Assetto Corsa Facebook page. So do share away ! 
"Dear AC followers,
With Assetto Corsa’s debut on Steam Early Access, we almost stopped sharing some of our WIP images from production (except for those which were close to released, oh, and of course the awesome pics created by our AC fans).
Now, with 30,000 genuine followers on Facebook, we have decided to reward you through an original achievement: yes, every 1,000 new FB Likes, we'll release new screenshots and information about the development.
It seems you guys really liked the LaFerrari@Spa-Francorchamps picture. If you want to see more, you know what to do! Share Assetto Corsa FB page with your friends!"
And to reinforce this statement, we've already seen the first two sets, one with the progress on Nords, and the other one on the famous Alfa Romeo 155 V6 TI.
"Dear AC followers,
With Assetto Corsa’s debut on Steam Early Access, we almost stopped sharing some of our WIP images from production (except for those which were close to released, oh, and of course the awesome pics created by our AC fans).
Now, with 30,000 genuine followers on Facebook, we have decided to reward you through an original achievement: yes, every 1,000 new FB Likes, we'll release new screenshots and information about the development.
It seems you guys really liked the LaFerrari@Spa-Francorchamps picture. If you want to see more, you know what to do! Share Assetto Corsa FB page with your friends!"
And to reinforce this statement, we've already seen the first two sets, one with the progress on Nords, and the other one on the famous Alfa Romeo 155 V6 TI.