Featuring Sega themselves, Konami... and a monopoly.
http://www.nintendoworldreport.com/news/50313/ten-more-games-announced-for-genesis-mini
Sega has now unveiled half of the lineup for the upcoming Sega Genesis Mini.
The second set of 10 games is:
Castle of Illusion was available in a bundle with a remaster of the game on PlayStation 3 and Xbox 360, but World of Illusion and Contra Hard Corps have not previously been made available digitally.
Apparently M2 is doing the emulation so unless Sega gave them a literal toaster to run Genesis games off of we should be in good hands.