Brandon Sandersons next Mistborn book can take his best change from Era 1 to Era 2 and apply it to the franchises future. Sanderson has plans to begin writing his Mistborn Era 3 series (Ghostbloods) in 2025, releasing the first in the new trilogy after all three yet-to-be-named installations have been completed. With the first two eras concluded and Sandersons writerly proficiencies constantly maturing, he now has the capacity to analyze the most and least successful elements of each storyline to create an even more successful Era 3 with the next Mistborn book.