There’s also a part where he’s asked what happened to previous projects.
Mario 64-2: originally planned for 64DD, some parts made it into other games, but Miyamoto forgot which ones (!)
Cabbage: Cancelled but some ideas made it into Nintendogs.
Mario 128: A test concept for Mario. Some elements are in Mario Galaxy, incl. the running around a sphere and gravity.
Marionette: Moved to Wii. Still in development.
Stage Debut: Some elements seen in E3 Wii demos, like the face mapping element. Looks like many elements will make it into other games rather than being released as a standalong product, but the writeup is kind of vague.
I am really surprised that Marionette is still in developement! I remember this game being in developement way back even before the Gamecube launched! Well enjoy this new bit of info!