https://store.steampowered.com/app/505230/Pathologic_2/

Preordering will get you a 10% discount. The official Pathologic 2 digital art book and soundtrack are also available for purchase and pre-order on Steam, separately or as a bundle.

The owners of Pathologic Classic HD are eligible for another 10% discount (you’ll find a coupon in your Steam Inventory). This discount will stay relevant even after the release of Pathologic 2, until the end of May. And yes, the two discounts do stack: pre-ordering with a coupon makes the game 20% cheaper!

Pathologic 2 comes out in two weeks.