Windows 8 the Future

Windows 8 is the codename for the next version of the Microsoft Windows computer operating system following Windows 7.It has many changes from previous versions. In particular it adds support for ARM microprocessors in addition to the previously supported x86 microprocessors from Intel and AMD. A new Metro-style interface has been added that was designed for touchscreen input in addition to mouse, keyboard, and pen input. Its server version is codenamed Windows Server 8. It will be released in late 2012.
Windows 8 will contain a new user interface based on Microsoft's design language named Metro. With the new change, the Start Menu was replaced in favor for the new Start Screen, where there are tiles that contain shortcuts to applications, Metro style applications, and updating tiles, similar to Windows Phone. Metro may be turned off in the Windows Registry settings.
A new authentication method allows users to sketch in three different places over the picture to login, instead of typing a password.
Windows Explorer now uses a ribbon interface, similar to those used in Microsoft Office applications.
Another feature expected to be introduced in Windows 8 is native USB 3.0 support, without the need to load drivers.
Windows 8 will come with Windows Store, an online marketplace for buying, selling, and advertising applications.
Windows 8 can be run from a USB-connected drive, such as a flash drive. This feature is called Windows To Go. It is intended for enterprise administrators to provide users with a Windows 8 image that reflects the corporate desktop; pricing and licensing details were not discussed when the feature was announced.WTG is not included in Windows 8 previews.
Windows 8 will support multiple monitors with the new ability to natively display different background images on each display and customized taskbar(s) on each of the connected displays.
The Developer Preview comes with two new recovery functions. Refresh and Reset, which both make a complete restore easier than a re-installation. The former keeps all the settings and files of the user intact and only reverses all changes to Windows files to their original state while removing all installed programs and apps. The latter deletes all files and effectively re-installs Windows, but without any additional user input such as agreeing to license agreements or selecting a hard disk required. After a reset completes, the user will be asked for the product key and will then proceed to account creation.
One big change is that user accounts do not have to be local-only (or from an Active Directory domain) anymore but can be linked up to one's Windows Live ID. This has the advantage that users will not lose their settings as they move from their home computer to their work laptop or to any other computer also using Windows 8.
Other new features include a new Welcome screen, a new packaged application model called AppX that is based on Silverlight, and Open Packaging Conventions, as well as a setting to automatically adjust window color to fit the wallpaper.
There is also a stripped down "Immersive" version of Internet Explorer, using the similar Metro-based user interface of the mobile version of Internet Explorer 9. The Immersive Version of Internet Explorer 10 does not support ActiveX plugins, in order to be an HTML5-only browser. The Desktop version of IE10 does support ActiveX plugins.
A new "Hybrid Boot" option that uses "advanced hibernation functionality" on shutdown to allow faster startup times.
A new version of Task Manager with a redesigned user interface is also present in pre-release versions of Windows 8.