Ugh, as I don't agree with all of Scott's views on stuff, I will agree with this.
If you were on Windows 7, you didn't go into Windows update to update to Windows 8/8.1. There is not any official "Windows store" for Windows 7 (**WINDOWS 8 WAS/IS NOT FREE**). You went to MS's site downloaded a small program, when you ran it, it would take all your info, key, setup etc, then it would download the files in the background, then install. Then you have Windows 8...
This would be almost like taking a DVD, putting it in the drive and running setup. Odds are VERY HIGH that the same process will happen for WIndows 10, it will check your install, validate it (your version of Windows), then download the files, and click install, after a few reboots, you have Windows 10..
Yes, you will be able to UPGRADE from Windows 7 to Windows 10, it's just not going to be as easy as it was before (like going from 8 to 8.1) and you WONT use Windows update to install it (maybe the 5K updates after install but, that is different).
To be honest with you, Who really cares if MS uses WIn update or uses their in house download too that does very good compression ? It still will get the same result, I think 7 to 8, MS used their own tool,. not windows update, I'm able 85-90% sure on that one but, of course I could be wrong.
I just hope they provide me with a key, so after the upgrade is done, I will want to do a clean install (format and start over) to get all the old crap out. So, as long as I can get an ISO, I will be happy.
Got a tablet and wondering what you can do with an ISO ? Microsoft has a tool, Windows 7 USB tool, it will take a MS ISO and put it to a flash drive. Stick that flash drive in and run setup, OR set your tablet to boot off the flash drive and format then install Windows 10...
Very easy, I think this should clear it up for a lot of people... I think I worded it better