According to Patton Oswalt’s website he has penned a comic that ties in with Joss Whedon’s Serenity series titled Serenity: Float Out for Dark Horse comics. According to Patton
I’ve written a Serenity comic for Dark Horse. It’s a one-shot elegy for Wash, whose passing, I’m sure, bummed you out as much as it did me. It’s got superlative art by Patrick Reynolds and Dave Stewart’s usual, pitch-perfect palate. And there’s two groovy covers, so we can suck even more money out of you. One of ‘em by Frank Stockton, and the other’s by Jo Chen. You should probably by twenty of each, just to be safe.
Patton will also have a book titled Zombie Spaceship Wasteland coming out via Simon and Schuster later this year.