Newsarama's preview of DC's November 2010 solicits, check out this cover to the second issue of the 6 issue mini JLA/The 99, with art by Felipe Massafera. I don't know The 99 from The 100 (little bit of Black Lightning humor there), but I do know Hawkman on a cover when I see him! Looks like the Winged Wonder will be taking part in this crossover!
This cover has a strong sort of Silver Age vibe to me, like something you might see on an oversized comic or something along those lines.
JLA/The 99 #2 hits stores November 24.
Image: JLA/The 99 #2, 2010, Felipe Massafera.