Nintendo may have forgotten about half of their treasured franchises and are performing sick experiments on the other half (I'm looking at YOU, Metroid Prime Federation Force) but German studio Shin'en isn't letting fans forget that Nintendo consoles used to be home to awesome speed. Their upcoming title FAST Racing NEO looks like the closest thing we're ever going to get to a proper F-Zero sequel. The original FAST Racing on the Wii eShop was pretty spectacular, but the new game looks far and away better than most first party games Nintendo has put out, at least graphically.
You can expect FAST Racing Neo sometime in late 2015.