This is really going to jack up her Smash moveset.
http://www.nintendoworldreport.com/news/64843/princess-peach-showtime-launching-march-22
The "untitled Peach game" is not only titled, it's also been dated.
Originally announced in June's direct, the Peach-starring game was shown today as "Princess Peach: Showtime" and will launch on March 22. In the game, Princess Peach can don various costumes including a patisserie (baker), detective, and swiordfighter in order to save areas from an evil gang.
I'm surprised more people aren't talking about this. This game looks like it could be amazing based on what they showed. Nice variety of gameplay with more yet to be shown. Definitely something that has a lot of potential.