Investor briefing is less than a couple of days away for Nintendo and about 2 weeks away for DeNA so it's about time we should hear about Nintendo's first mobile game which is due to release before the end of the year.
Nintendo have been very vocal about their plans for the mobile market and wanting to create unique experiences that are tailored to the mobile experience but still based on their big IP's. No hints have been given but what I have done is written an article linked here and below that is about the state of the gaming industry and why Mobile could be very important for Nintendo as well as what we should expect. It'd be cool if we could talk about whether people agree or disagree with the points raised as well as what sort of mobile games you'd like to see or would expect to see from Nintendo.
For me, I'm expecting just a standard game to start off with. By that I mean a puzzle game or other popular genre like endless runner etc... Something simple that uses the power of the IP to promote it. I don't mean a super simple re-skin game here but something that uses a well known theme like "Collect all these things" or "Match these items" etc...
Whilst I'm not sure if they'll go with Mario for their first game (they might want to use the first game with a lesser known IP to test the market first and then after gaining experience they release the Mario game) I could see them going with Mario first just so they can promote a big IP on Mobile first.