Mario Kart Nexus is the next major mario kart title to be released late 2012-early 2013, and will have the most major (and serious) updates to gameplay yet, and will lose some of the series' previous kart aspects(like the crazy handling in comparison to other racing games), while retaining most of the core aspects (weapons, battles, etc.). It will also be a public test bed for a new engine simply called (...)-01R (for reasons currently known only to me) and will feature an in-game AND wii/3DS/wii U menu accessible forum for bug reporting and general suggestions/conversations.