Nintendo likes to keep quiet on projects like their next console and such.
It may not be awhile for their next console, probably 2-4 more years for Wii and then Nintendo will talk about their new console and launch it in 2014 getting a year ahead of the competition. More than likely it'll keep the name Wii as well but be something like Wii2.
Btw that hologram thing is a myth, we're most likely never to see that implemented in any console next time around.
AS for F-Zero, It's quite possible there is one in the works, remember Metroid the Other M? None of us knew about that until E3 this year. We know Pikimin & Kirby are in the works, and we may receive another surprise next year.