StudioPress' Eleven Pro theme is a premium WordPress theme designed and developed by StudioPress, a popular provider of WordPress themes and the Genesis Framework. However, as of my knowledge cutoff in September 2021, StudioPress had not released an Eleven Pro theme. It's possible that the theme has been released after my knowledge cutoff, so I recommend visiting the StudioPress website or contacting their support for the most up-to-date information about their theme offerings.