After June 30, 2008, Windows XP will no longer be offered by large PC makers, forcing users to downgrade to Vista. The other, likely option is that we see further movement towards OSX, and hopefully more movement towards the widespread use of linux(you can always easily give linux a shot, and keep your Windows by downloading an easy installer here ).
"Despite a brief "Save XP" movement (and continued criticism of Windows Vista from many corners), it appears that Microsoft is not going to change the deadline, which is now just two weeks away.
Although XP will disappear as an option for most computer buyers, the operating system will live on in several key ways.
• XP will be available on PCs from smaller computer makers known as "system builders" until January 31, 2009.
• XP will be available for so-called ultra-low-cost-PCs until June 30, 2010.
• The low-end Windows XP Starter Edition will continue to be available in emerging markets until June 30, 2010."