This years Free Comic Book Day is Saturday, May 5. While it is still a few months off, DC has revealed a preview of what we can expect from them. DC Comics - The New 52 Free Comic Book Day Edition will feature at least one new story as well as a preview of 6 titles in the second wave of the new 52.
The full press release:
Featuring art by legendary illustrator Jim Lee and other top talents, DC Comics - The New 52 FCBD Edition will include a new story by New York Times bestselling writer Geoff Johns.
There will also be preview material from DC Comics - The New 52 "Second Wave" titles, including Batman Incorporated, Dial H, Earth 2, G.I. Combat, The Ravagers, and Worlds' Finest.