Apparently (and I have not been able to confirm this) the collected edition of the Joker's Asylum mini-series came out in stores yesterday. This trade paperback leads with the Mad Hatter story that I wrote last spring, illustrated by Keith Giffen and Bill Sienkiewicz with colors by David Baron.
A preview of the story can be found here.
The collected edition also features: Harley Quinn story, by James Patrick and Joe Quinones. The Riddler, by Peter Calloway and Andres Guinaldo. Clayface, by Kevin Shinick and Kelley Jones and Killer Croc by Mike Raicht and David Yardin