We already saw the cover, but by way of Mega Man Monthly, here's the solicitation for Worlds Collide Part 7 ( Mega Man issue 26):
(W) Ian Flynn (A) Tracy Yardley & Various (CA) Patrick Spaz Spaziante
‘When Worlds Collide,’ Part 7 of 12. The historic Sonic the Hedgehog and Mega Man crossover event rolls on! The hunt for the Roboticized Masters continues as Sonic and Mega Man face down Shadow Man and – Shadow Man? Meanwhile, Drs. Eggman and Wily gloat over the captive Dr. Light. But what is the brilliant, bearded scientist preparing to do? Featuring stunning new cover art from Patrick ‘SPAZ’ Spaziante, and a special throwback variant cover you just can’t miss!
Source: Mega Man Monthly