Princess Cadance

Princess Cadence is a Pegasus unicorn pony who has yet to appear on the show. She is scheduled to appear in Season 2's two-part finale, A Canterlot Wedding, along side Shining Armor, her husband-to-be.|[2]

Development
Lauren Faust was involved in the inception of the story in which Princess Cadence appears. At that point in development, Cadence was not designed as a Pegasus unicorn, and Faust was surprised to see her as such; the decision was made after she was no longer working on the show.

Cadence is a musical term meaning modulation, inflection rhythm, or the closing sequence of a musical phrase.

Merchandise
A "Pony Princess Wedding Castle" featuring a plastic castle, Shining Armor brushable, and Princess Cadence brushable, has been set to be released August 2012.

On Princess Cadence's toy box, her name is spelled "Cadance".