That's quite juristic questions!! I would say that, if an company advertise to give something for free of owners of sudden product's, those old product's still will be valid for using! It would differs if those company would offer an change of a product, which would need a hand over of the old one, so the old one couldn't be used anymore. In regards to Software licenses, AFAIK there isn't any precedented example that an Software developer/company revoked a license for the use of an software while offering an Free Upgrade to an newer version. And Microsoft will hardly do that!
I'm only going to upgrade my test rig and I'm going to be reading the license agreement very closely before I upgrade.
LOL, I had to create a hotmail email just to be a "insider", so once I have my downloaded copy, they can have it back.
Yeah, me too, but every one had the PC's Model No. along with a OEM SLP, SLIC, or Win8.x Key MS has already stated that the 'Activation Hardware Hash' will be stored in the cloud and linked to the primary MS Account on the PC. Hence you needing an MS Account/email address to get the TP, you have to enter one to reserve the upgrade on your PC and possibly need one to activate Windows 10 on your PC.
I can confirm that. It is exactly what we have been told be a Microsoft person, when asked about it. Also, they confirmed that once you upgrade to Windows 10, if you later need to reinstall the OS you will be activated automatically, because the details of your device are stored upon first activation. One more thing concerning "low spec devices" (eg tablets with little free storage space): you can provide a usb key or memory card during the process, so that you can perform the upgrade. These will be needed in case you need to go back to the previous installation.
I don't find it too difficult to create an account used solely for MS and its wonderful OS. It isn't like anyone uses it to cyber with Alpha or Tito, although I might consider it
Sounds like a lot of mumbo-jumbo, at this time. Looks like they themselves aren't completely certain, yet. If MS wants a clear statement, how about this: Should they require any online account or cloud stuff for Win 10, then they can stick their shiny new OS to a place where it's never shiny. See, no ambiguity here.