For those who want to do it "their way" here's instructions of the means to do a fresh install of Windows 10 in the event that you might want to hold on to your current Windows version without actually updating it.
Your question might be, "why would I want to do that"?
My answer would be "because you may NOT trust that the upgrade will work as advertised."
And many of use would be skeptical as well since Windows 8.0 didn't and Microsoft has a history of missing the mark with early releases.
But one thing is for certain. Windows 10 WILL be released and it WILL be revised and previous versions of Windows - including Windows 7 and Windows 8 will eventually be sent to the "end of life" graveyard.
How to download and install Windows 10 without using Windows Update | VentureBeat | Gadgets | by Emil Protalinski
Thanks to VB - VentureBeat