What will be the new gimmick of MK9?

[Leynos]

BraLoD said:

The idea of changing stages temporarily mid-race sounds pretty fun, but as someone else said, mostly make sense in a Wonder themed track, not the whole game.

If Nintendo were to do a rift apart in showing the new SSD read speed they would not limit it to one stage. Make an entire game to show off new hardware. Always been their thing. Unless they have a different launch game in mind. An existing IP or new IP does that.