Do any of the reviewers say what version of iOS is on these devices?
EDIT - MacStories states their device shipped with iPadOS 14.5
www.macstories.net
Runs iPadOS 14.5 out of the box. iPadOS 14.5 comes preinstalled with this iPad Pro and has Center Stage, which is exclusive to this device. Interestingly, I had initially upgraded my review unit to iPadOS 14.6 beta 3 so I could restore my iPad Pro backup, but Center Stage wasn’t working in that beta release, so I downgraded to iPadOS 14.5.1 by downloading the firmware from Apple’s servers, and everything was fine again.