Microsoft finally announced they will release 6 Windows 7 Editions as Windows 7 Starter , Windows 7 Home Basic, Windows 7 Home Premium , Windows 7 Professional , Windows 7 Ultimate Edition , and Windows 7 Enterprise .
Unlike XP,Vista users can upgrade directly to Windows 7, so your files and apps should migrate to Win7 without any problems. Windows 7 doesn't have a direct upgrade path from XP, they have to manually migrate their files and apps. But Microsoft give assurance to the customers that they can always downgrade to any previous version of Windows.
As majority are using Windows XP,Microsoft is developing an excellent tool “Microsoft Deployment Toolkit 2010″ for easily migrating Windows XP to Windows 7.The tool Microsoft Deployment Toolkit 2010 is in beta state now and it is capable of migrating in 30 minutes.With USMT can help you improve and simplify your migration process.It captures desktop, application settings, user accounts and users’ files, and then migrates them to a new Windows installation.
Here is an embedded video from Jeremy Chapman, senior product manager, Windows 7 Deployment.
Learn how to use the User State Migration Tool (USMT) to migrate user files and settings from Windows XP to Windows 7 using a default installation. Watch this video from Microsoft TechNet : Migrating from Windows XP to Windows 7