This Should Be Interesting

Microsoft has been making a big push to change its business model for Windows — likely due to the low/no cost updates you can get for competing operating systems. 

The company surprised everyone when it said legit copies of Windows 7 and 8 would be supplied with free upgrades, but now they're extending that even further: anyone who tests the Windows 10 Technical Preview will get a free upgrade to the full version of Windows 10 when it comes out.

 In a blog post, Microsoft's Gabe Aul said, "As long as you are running an Insider Preview build and connected with the [Microsoft account] you used to register, you will receive the Windows 10 final release build and remain activated. 

Once you have successfully installed this build and activated, you will also be able to clean install on that PC from final media if you want to start over fresh."