Microsoft is working on an update for Windows 8 codenamed Blue which will be released as preview in June. Various Windows Blue update got leaked in the past few months and revealed number of improvements over Windows 8 UX. It includes improved PC Settings menu, Start screen, lockscreen, etc,. ZDNet reports the following changes too,
In addition to the optional Start Button and boot-to-desktop options, there may be other interface adjustments in the works, according to one of my Blue tipsters. I hear the Windows team may also be tweaking the Charms to make them a bit easier to use with a mouse. There might be new built-in tutorials and in-context help coming to Blue. And word is there may be adjustments to the Start Screen designed to make Blue easier to use for Desktop users. One of my sources said some of these tweaks may not be in the Windows Blue preview release coming at the end of June, but that they still could make it into the final product.
Microsoft is also making Windows Blue optimized for 7-8 inch devices which are hitting this holiday season in US.