Japan Sees Nintendo Account Launch
Change Country Option Seems Promising
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According to Twitter user Chessemeister3k, Nintendo Accounts launch in Japan and he gives details of what these new accounts hold through a series of tweets.
Of note, new features include a purchase history that carries with your account, add social links, and change your nickname. One of the Tweets also mentions a "change your country" option, which could mean a potential end to region lock.
As of right now, there isn't any word on when Nintendo Accounts will be coming to the West.
Source: Cheesetmeister3k