Microsoft has announced that Windows 10 will be a free upgrade for the first year, then it will become a standard retail OS if you choose not to upgrade from Windows 7 or 8/8.1. Release date is said to be sometime mid to late 2015. Technical Preview users have reported 10 as a substantially better integrated OS than 8.1 in its desktop's mouse/keyboard and tablet's touch/pen. Some notable feature enhancements include Spartan Browser, Microsoft Azure personal and enterprise cloud computing, and Microsoft Cortana (MS HAL-9000). Gamers might appreciate better Xbox integration. Sounds like a great deal. I took advantage of the $40 8.0 Pro upgrade when it first came out and never regretted it, now I can finally ditch XP Pro after slowing finding solutions to legacy hardware and software.