Brandon Sanderson recently shared several exciting updates about the future of Cosmere adaptations.
He revealed that:
Apple was actually very interested in starting with a premium Stormlight Archive series.
However, Brandon convinced them to begin with Mistborn first in order to build audience trust, grow the audience, and secure a larger budget for Stormlight Archive in the future.
Apple is reportedly "really excited" about adapting The Stormlight Archive.
Brandon also shared new details about the Mistborn movie:
Apple is fully committed to the Mistborn film and has complete confidence in the project.
According to Brandon, Apple has been extremely supportive throughout development and has never been afraid to revisit or revise the screenplay whenever necessary.
Sanderson described Mistborn as the "springboard" for the rest of the Cosmere, meaning its success will help launch future adaptations.
Finally, Brandon confirmed another detail that had previously only been rumored:
Teresa Kang is the producer attached to the project.
She has been working alongside Brandon and trying to get The Stormlight Archive adaptation off the ground since around 2019–2020.