Ask HN: Windows 10 for Linux users?

I know there will be an upgrade to Windows 10 for people actually using Windows 8.1, etc. How can a Linux User give a try Windows 10? Do I need to buy a License or there will be some kind of ISO image available for free download at the beginning? Thank you!

If your just testing I think there are Technical Previews. For example Parrallels for OS X has an easy way to download them. I think you could probably get something similar for Linux via something like this https://insider.windows.com/