This is happening sometime early next year. A mega-crossover between Sonic and Mega Man will certainly be epic for two of the most kid-friendly super-series out there today. Anyone not currently checking out these books should find a copy of Sonic: Genesis and Mega Man Volume 1. You might be surprised by the quality of the books.
Marvel has nine cancellations coming in the month of October and only one new ongoing in the form of Uncanny Avengers. With that being said, expect new number ones from the majority of these books in either November or December.