According to Reuters, and Gizmodo Microsoft is planning to allow free upgrades for everyone including those using non genuine copies of Windows. Though the offer looks like it may be limited to China for the moment (still waiting for Microsoft's official answer)
"We are upgrading all qualified PCs, genuine and non-genuine, to Windows 10," he said in a telephone interview with Reuters. The plan is to "re-engage" with the hundreds of millions of users of Windows in China, he said, without elaboration.
Myerson said Windows 10 would be released globally sometime "this summer". That is the first time Microsoft has put a time frame on the release, although it has been expected in autumn, based on Microsoft's release history.
Microsoft said in January it would offer free upgrades to Windows 10 for users of Windows 7 or later in an attempt to hold onto users and make up for lost revenue by selling services such as Office over the Internet.
time to dig out that old FCKGW product license key, it could come in handy someday :)
http://www.pcworld.com/article/2899877/windows-10-upgrades-w…
Additional news by M$ — upgrades done to an unlicensed copy of Windows will still remain unlicensed.
haha
windows 7 or later though, so unfortunatly you wont be able to claim that upgrade :)