Numerology indicates that Toad is in. See, look!
September 12, 2013 was the day Peach was confirmed. Toad was shown.
9 + 1 + 2 + 2 + 0 + 1 + 3 = 18
1 + 8 = 9
It means SSB4 will have the Mario Big Eight (Mario, Luigi, Peach, Toad, Yoshi, Donkey Kong, Wario, and Bowser) plus Rosalina as playable characters.
November 21, 2013 was the day Super Mario 3D World came out. That was the day Toad was shown again.
1 + 1 + 2 + 1 + 2 + 0 + 1 + 3 = 11
1 + 1 = 2
There will be two Mario newcomers: Rosalina and Toad.
December 18, 2013 was the day Rosalina was confirmed. That was also the day Toad was shown again.
1 + 2 + 1 + 8 + 2 + 0 + 1 + 3 = 18
1 + 8 = 9
This is just reinforcing the "Mario Big Eight + Rosalina" theory.