The last Mario game released was Super Mario Maker, which allowed players to design levels, breaking from the traditional layout. Although there's no word on how exactly Nintendo will breath new life into Mario this time around, Miyamoto did comment on the challenges involved in modernizing this particular classic. He told IGN, "It's kind of difficult with Mario because some of the more important conventions of Mario are based on the approachability and accessibility of those games."
But still, with the new Zelda looking fantastic, these comments are certainly reason to get excited if you're a Mario fan. Also, now you really need to buy a Nintendo.