From my understanding it's currently only iOS devices although they didn't really clarify, so I'm thinking it's just the newest iPhone's, seeing how the new mobile game is only on iPads / iPhones for now.
I'm planning on buying the new Animal Crossing 3ds bundle on release day which comes with the game pre installed. I'm just wondering if it is tied to an account like the eshop or will live on the SD card forever ? the reason I ask is I want to buy a bigger SD. if anybody knows from past bundles I would appreciate an answer.