So I searched this new named everyday since the patch, never found it and today I made an interesting discovery.
I pulled and killed an lvl 100 Blood Skulk Soothsayer, after its death i noticed it had 3764 HP, unusal high HP for a normal soothsayer at that level. Also the monster dropped like a named! Several forms and hortitems, stuff like that.
I think I killed Digda, but he was wrong labeled. Like mani when he was first introduced, he had also the wrong name.
I can also post an screenschot if needed.