Just downloaded your W7 SP1 july and when I ran it in a VM which is used for Office work, it was W10 Pro RS5. Any idea?
Yes.
I put in the description: "New: this version uses an ESD file (a compressed wim image), making it much smaller. Only 2.4 gb vs 4 Gb for the previous edition. Note that the setup begins like a windows 10 installation." Actually it goes back to the normal layout of windows 7 after the 1st reboot.
Note:
When the install is asking if you have a serial number, I advise you to say no.
The setup is working in a vm. I didn't test it with a usb key.