Based on their customer feedback, Microsoft is promoting that it has simplified the PC experience by making a lot of functions easier to use, such as better previewing on the Task Bar, instant searching for files or media and easy sharing via HomeGroup networking. They also claim improved performance by supporting 64-bit processing which is increasingly the standard in desktop PCs. In addition, Windows 7 is designed to sleep and resume faster, use up less memory and recognize USB devices faster. There are also new possibilities with media streaming and touchscreen capabilities.
The above are improvements for both the Vista and XP users. If you are already a Vista user then the improvements to Windows 7 are going to be more subtle. Vista users are likely already familiar with features like the Aero visual functions, the Start Menu organization and Search. However, if you are currently using XP, then you may require a bit of an adjustment period.
Improvements for both Vista and XP Users
New Taskbar and System Tray
Quick Desktop View button
Improved Start Up, Sleep and Resume performance
Improved power management saves memory and battery life
Libraries to improve file access and organization
Action Center for system maintenance, back ups, troubleshooting and more
User Account customization of notifications
Improved back up
New wallpapers and themes
Improved gadgets
New premium games include Chess Titans, Mahjong Titans and Inkball
Advanced Calculator functions including saving history
Improved networking via HomeGroups
Passkey protection with networks
Device Stage for recognizing USB devices faster
Windows Mail replaced by Windows Live
Changes and improvements from Windows XP only
New Start Icon
Aero Snap, Shake and Peek
Desktop icons like “Computer” and “My Documents” are removed and accessed through the Start Menu
Larger icons and hidden icons in the Taskbar
Quick Launch toolbar has been replaced by pinning a program to the Taskbar
Jump Lists for easier access
A Search Bar in the Start Up Menu
The "Run" command is accessed through the Start Menu's Search Bar
Faster and smoother gaming components
Parental Controls for monitoring computer use
Update feature that eliminates web surfing for patches