If scenario books aren't being made then is the idea to just use the core book to write your own adventures? Personally as a first time GM that scares the crap outta me!
Mistborn contains one of the best group based scneario generators in the hobby. You effectively sit down with your players, pitch a general idea and then listen to what they want to do and what they think might happen. This feeds into a process which practically spits an adventure out at you, with the added bonus of being tailor made to the PCs.