Nintendo has finally launched sign-ups for their Nintendo Account service, for users outside of Japan.
Sign-ups for the new service are currently limited to:
Austria, Australia, Belgium, Canada, Germany, Spain, France, United Kingdom, Ireland, Italy, Japan, Luxembourg, Netherlands, New Zealand, Russia, and the United States.
You can link your Nintendo Account to your Nintendo Network ID, Facebook, Google+, and even Twitter accounts.
Nintendo also launched the pre-registration for Miitomo, their first iOS and Android app, which is set to launch in March.