Coming Saturday, May 3rd, 2014, Archie will be releasing a special flip comic combining content from both the premier Mega Man X story and Sonic the Hedgehog. According to the solicitation:
"(W) Ian Flynn (A) Gary Martin & Various (CA) Tracy Yardley, T.Rex
Its TWO free comic books in ONE! Hot off the heels of the ultra-successful Sonic/Mega Man crossover event, "Worlds Collide", comes a showcase issue of the hottest new storylines in both characters' universes - exclusively for Free Comic Book Day! Sonic stars in "Blast to the Past" and the origin of his Freedom Fighters! Then, on the flipside of this issue, get ready for the "Mega Man X" crossover event with this primer story!"
For more on Free Comic Book Day, and to find a comic shop near you, check out their website.