The in depth preview page:
Describes:
Copy enhancements
You’ll have a better sense of timing when copying files thanks to a new pie chart progress window. You can even stop or cancel a long copy session and resume it later.
Can anyone post screenshots of this? Really excited to see it, hoping its an improvement over the ancient file copy dialog thats there now.

OS - macOS Tahoe
macOS Tahoe with a new design, more ways to work seamlessly across devices, and new features to turbocharge productivity every day.
www.apple.com
Copy enhancements
You’ll have a better sense of timing when copying files thanks to a new pie chart progress window. You can even stop or cancel a long copy session and resume it later.
Can anyone post screenshots of this? Really excited to see it, hoping its an improvement over the ancient file copy dialog thats there now.