Surprising no one, Peach is returning as a playable character in Nintendo's upcoming Super Smash Bros. for Wii U and 3DS as confirmed by smashbros.com today, which describes her as a "veteran fighter."
Peach first appeared in Super Smash Bros. Melee and was also in its direct sequel, Super Smash Bros. Brawl, though she was not in the very first game on N64.
It is currently unknown what her full moveset will be in this game, but the images shared on the smashbros. site show that at least a few moves will be returning, including her "hip bump" attack, umbrella attack, using toad as a shield, and what looks to be her Final Smash which involves hearts.
There's also at least one new move, as evidenced by the image showing her using her crown as a potentially deadly new weapon. Check out some of the images of Peach in-game below!
Check outsmashbros.com for a few more screenshots of Peach in action.