Seems I jumped the gun a little bit and IGN has posted some updates from Nintendo about what Miyamoto’s role will continue to be at Nintendo.
While he will be focusing on training younger developers, his position in the company has not changed. Here is the official quote from Nintendo:
Video game designer Shigeru Miyamoto’s role at Nintendo is not changing. He will continue to be a driving force in Nintendo’s development efforts. In discussing his priorities at Nintendo in a media interview, Mr. Miyamoto explained how he is encouraging the younger developers at the company to take more initiative and responsibility for developing software. He attempted to convey his priorities moving forward, inclusive of overseeing all video game development and ensuring the quality of all products. Mr. Miyamoto also discussed his desire to pursue fresh ideas and experiences of the kind that sparked his initial interest in video games.
In the end, it looks like Wired (where the interview is from, which will be published next week) and Ars Technica (link to the, I’ll say, sensationalist article) might have jumped the gun on comments made by Miyamoto without checking with Nintendo to see if anything official had happened or was going to happen. While I’m sure he will be stepping aside at some time (I think he is 59), it doesn’t seem like that is now.