Earlier this year, the Nintendo Badge Arcade game for the Nintendo 3DS opened its doors to some third-party fun in the form of Mega Man badges. Or rather, Rockman badges, since this was limited to Japan only.
So, unless I'm mistaken, that should just leave us in North America to wonder when we're going to see these small digital tchotchkes that were (near as I can tell) added to commemorate the release of Rockman Classics Collection on the system in Japan. We've got the game, now we just need the goods!
Thanks to @Palgamer83 for the tip!