Today at a press event in San Francisco, Microsoft announces its upcoming version of Windows: Windows 10.
Pretty weird they skipped 9, it reminds me of that Windows 97. Notable changes include the return of your favorite start menu and much more seamless integration of the modern/metro/immersive/whatever they wanna call that touch interface with the desktop. They will release a technical preview(a test version) tomorrow. Expect more changes to the final product since it have plenty of time until it will be released to the general public next year.
For those of you worrying about the requirements, Windows 10 will have the same hardware requirements as Windows 8(source).