Blight will, unsurprisingly, be making it into the core game, though it has been changed a bit. It will be appearing in about 10% of maps you run, similar to Breach and Abyss leagues. In order to fix the likely most common complaint of Blight league, however, every Blight encounter is guaranteed to drop at least one Blighted Map or Oil. We will have to wait and see how difficulty changes in Conquerors of the Atlas shake up the difficulty of Blight encounters, as that will be touching the Blights as well!
If you have some MTX points burning a hole in your pocket before the new league, there is a sizeable sale going on this weekend, so you can check the store here! Plenty of stuff is heavily discounted, so watch out for cosmetics you love!