Mario Tennis Open roster thus far

This is what the roster looks like for Mario Tennis Open thus far:

Mario
Luigi
Peach
Yoshi
Daisy
Boo
Bowser
Bowser Jr.
Donkey Kong
Diddy Kong
Waluigi
Wario
Mii

Will there be more character inclusions? Or will this be the final roster? Hopefully we’ll find out soon!