Windows 9 could be a free upgrade for users of Microsoft’s older operating systems, like Windows XP, Windows Vista, and Windows 7, according to ZDNet. The report states that users of these dated (but still popular, aside from Vista) operating systems could be offered “some kind of deal” to poke and prod people them toward Microsoft’s next desktop OS. However, it’s worth noting that Windows 8/8.1 users were not mentioned as possible recipients of this upgrade offer. They were in the past, though.