The announcement came over the weekend during the Printers Row Lit Festival in Chicago.
Kidd confirmed the news via Twitter, but told CBR this afternoon that it's "far too premature for any 'official' announcement."
"I am excited beyond measure about it, and there is a signed contract, but beyond that I just don’t want to say anything about it yet," he said. "Believe me, when it’s a more appropriate time, you won’t be able to shut me up about it. I assure you."
Kidd, the associate art director of Knopf, has a long fascination with the Caped Crusader, dating back to his childhood. In 1996, he released Batman Collected, a coffee-table book devoted to Batman memorabilia (including his own). Last year he compiled and designed Bat-Manga! The Secret History of Batman in Japan, which showcased Jiro Kuwata's 1966-67 manga series as well as photographs of vintage Japanese toys.
Kidd also designed the trade dress for DC's Final Crisis, Trinity and the All-Star line, and collaborated with Alex Ross on Mythology: The DC Comics Art of Alex Ross and with Paul Dini on Batman Animated.