Windows 10 retail is almost upon us and today we wanted to take another look at Windows 8.1 ? as it stands this year. Based on our polls a substantial percentage of KitGuru readers didn't move to Microsoft's latest operating system ? but is it time for a look now if you just bought a 4K screen? It is worth bearing in mind that Microsoft will offer a FREE UPGRADE to Windows 10 for qualified new or existing Windows 7, Windows 8.1 and Windows Phone 8.1 devices that upgrade in the first year. So the question remains, should you install Windows 8.1 now and get the free upgrade to 10 when it becomes more stable later this year?