A thing that seems to be catching on is authors releasing extra material to go along with their books, like novellas and short stories. I personally love this, because there may be characters or perspectives that can add some depth to a story or make you think of things differently. I haven’t actually read enough of these yet to generate a full-blown list of favorites, but one good example of this is Hana by Lauren Oliver. I read this one right before reading Requiem, the last book in the Delirium Trilogy, and I feel like it made me perceive Hana a little differently than I would’ve had I not read it.
What do you think of authors releasing extra content like novellas or short stories?