This just in (literally, as I caught the live stream on Newsarama) from the DC Nation Panel at Chicago Comics & Entertainment Expo:
[fan]: I really liked the tones of GL Rebirth and Flash Rebirth, any plans for a feature on Hawkman?
[Geoff] Johns: "He's a main character in Brightest Day, and there MAY be other plans."
The fan joked that he wanted plastic maces as the next giveaway. [Dan] DiDio "That's way too good an idea..."
Wow! More of this if anything develops!
(PS: I want a plastic mace!)