Yep. Microsoft is giving Windows 10 for free, for anyone that has windows 7 or 8. This is free for private users and only for one year from release.
Works as a free upgrade through Windows update. Apparently it won't wipe your hard drive, if you don't feel like reformatting.
Going by what seems the tradition of every second Windows version sucking, and Windows 8 sucking hard, this is likely to be a good version.
Comes with Cortana (Windows version of Siri).
This free upgrade will even work for pirated versions of eligible Windows versions.
So thoughts?