Yep, the same ISO installs the same build 10240. (and more)
You’ll also be able to create your own installation media like a USB drive or DVD, and use that to upgrade your device or reinstall after you’ve upgraded.
1) .... if I copy that ISO or copy to the USB Drive - will I later be able to use it as a NEW Installation on the same hard drive ?
2) if that USB is valid for installing a new win 10 again, will I be able to upgrade to Win 10 Pro from it ?