Tracks:

Mushroom Cup

Toad Circuit: Generic starter track, first use of glider.

Daisy Hills: The track with the hot air balloons. Features long gliding section and rams.

Cheep Cheep Lagoon: First water level, shown off at E3 and demoed multiple times.

Shy Guy Bazaar: Arabian themed with multiple routes.

Flower Cup:

Wuhu Loop: The track that is one long lap. There are giant cars you need to dodge.

Mario Circuit: Contains a lot of coins for unlocking parts.

Music Park: Music themed, features pirahna plants and music notes that shake the ground.

Rock Rock Mountain: Another air themed track, has a lot of shortcuts to take.

Shell Cup:

Luigi Raceway (N64)
Bowser's Castle 1 (GBA)
Mushroom Gorge (Wii)
Luigi's Mansion (DS)

Banana Cup:

Koopa Beach (N64)
Mario Circuit 2 (SNES)
Coconut Mall (Wii)
Waluigi Pinball (DS)

Characters:

- more characters than the sixteen released

Items:

- Fire Flower is on a timer.
- Last item in the lucky seven is a mushroom
- Tanooki tail deflects shells back