Looks like that Apple exclusivity didn't last long! An ad for Super Mario Run has appeared in the Google Play store according to Polygon. No release date is given other than 2017 and "coming soon", but users can opt-in to receive a notification when the app becomes available.
I haven't heard nearly as much buzz about Super Mario Run as I have Pokemon Go, but everyone I know who has it does not regret their purchase in the slightest! Do you have the game? Will you be purchasing when it releases on Android?