Unlike Windows XP Service Pack 1, which included some new features, Service Pack 2 will primarly contain bug fixes. However in addition to including all post-SP1 bug fixes and product updates, Service Pack 2 of Windows XP will allow simultaneous user sessions. This will allow multiple users to log on to Windows XP at the same time, addressing an issue that became apparent to owners of Windows Powered Smart Displays.
For those using Smart Displays, this means that while the portable display is in use it will be possible for someone else to use the same computer via the primary display.
Windows XP Service Pack 2 is expected to be released in late 2003.