Although The Expanse has always been good about adapting key elements of the books, readers should be especially excited about the fourth season.
Besides, unlike Game of Thrones, The Expanse has not outpaced its source material.
Cas Anvar also teased that there will be fewer limits on what the show can do with regard to content, which could mean The Expanse adapting certain parts of the source material novels that never would have made it to basic cable.
Syfy did allow The Expanse to drop the occasional F-bomb and the show never shied away from airing sex scenes, but perhaps even more boundaries will be pushed in the streaming fourth season.