Neowin published a review on Windows 8.1
Windows 8.1 is the start of something new for Microsoft. It’s a dynamic shift in strategy for its core OS and it is also a refinement to Windows 8, one that will likely shift the tide in terms of user perception.Windows 8.1 Review
Prior to this release, Windows 8 had been a toss-up between a dramatic separation from the traditional Windows platform, and a push in creating a new user experience that is touch-friendly. The result was that Windows 8 was a hybrid OS - and consumer reaction to this was mixed, to say the least - but there were some glimmers of real innovation tucked inside the OS.