Many of the change affect things "under the bonnet", but there are a handful of visible improvements. There is now an option to restart or shutdown Windows from the Start screen - yep, it's now as easy to shutdown Windows as it was prior to 2012. The full screen "modern" apps (previously Metro apps) now have a cross in the top right-hand corner, making them easier to close. As these were both things that commonly baffled newcomers to Windows 8, it shows that Microsoft are listening. Perhaps not carefully enough yet - we'll have to see if the Start menu really does return in Windows 8.2. Another useful change is the ability to more easily sort the items on the Start Screen, such that the most commonly used programs are listed first for example.
Despite the slightly cynical tone of the above, Windows 8 continues to improve and now has many advantages over its predecessors. Performance, reliability and stability do indeed go a long way to making it the "best Windows ever", even if not to everyone's liking.