I doubt it will be groundbreaking, because it's still an autorunner, but I reckon Nintendo will raise the bar. The Rayman runners are really slick, so I'm expecting something at least that good in terms of general mechanics, but for Nintendo to bring in more hidden items, secret paths, that kind of thing. Lost Socks also showed how non-linear an autorunner can be in terms of offering different routes to complete a level.
This game will be fantastic for so many reasons; even if they have to do with plain old nostalgia. Seeing Mario running across the screen and listening to that music.....I can't wait. But i think this game is important for the landscape of mobile gaming. I think everyone will agree that this game is gonna make a ton of money...and hopefully other studios will notice and jump into the mobile scene. Sony is coming with some games too so the future is looking good. I, as opposed to what appears to be majority, do not have an issue with free and pay to play games. Premium would be better but it is what it is.
Update: I misspoke, it is premium with 1 time purchase.
If folks were questing if this should've been a free to play game, then Nintendo has mentioned they didn't want to do that type of game.
As for it's $10 price... that sounds about right. I am of the opinion that that should've been the minimum for MANY games. The typical consumer is crazy to expect a $1 to $3 game will get free updates for life, timely updates, sexy polish, free content, and multiplayer capabilities. Especially if the game took more than 4 months to complete.
On the plus side, I'm guessing this is all a side project for Nintendo. They're overall still doing well in their traditional space. Wii U wasn't hot, but Wii was, and sort of like Apple, they have a very large cash reserves in the bank to absorb flops.