UPDATE - It seems that some people are disputing the translation, saying it doesn't indicate a digital copy included in the retail version. We'll see if we can't get another translation to clear up this issue.
Looks like AKB48+Me is going to be an even more important third party release in Japan. We already know the game will hit both eShop and retail the same day. What we've just learned is that the retail version will also include a digital copy. Let's hope this is a trend that continues with more 3DS games, both retail and eShop!