In a recent interview with DeNA President Isao Moriyasu, the executive explained the difference between Miitomo and other social networks. In short, he said that Miitomo is much more based on entertainment, rather than just communication.
“Miitomo places more emphasis on entertainment,” he began. “The process of discovering new aspects of your friends via Miis can be quite fun. One distinct aspect of Miitomo is how you can configure your Mii to have it look very similar to yourself. Communicating with friends who actually look like your friends in real life is a distinctly different feeling from text-based communication. We’re thinking of linking the game with users’ Facebook friend lists. I think it could be fun connecting with friends people don’t often communicate with.”
Miitomo is set to launch in March of next year.