This seems like as good of a place as any to dump this.
http://pastebin.com/Nfc2WXBc
There will not be any more Mario Kart dlc, the unspoken rule is that once you sell a season pass you cannot then go back and add more content and expect people to pay for it, that's just how it works. The Mario kart 8 dlc is very high in quality and I expect it has caused significant delay to Mario Kart 9, so the short term gain has harmed them in the long term.
The damning thing for me is that there will be a Wii U Exitetruck! Do you realise how much of a commercial failure Excite bots was? It's more likely we will see the next installment in the Disaster Day of Crisis franchise than another non-reboot Exite game.