Server 2003 is scheduled to begin its sunset cycle July 2010. After that time Microsoft will only release security patches. Microsoft is planning on doing security patches until April 2014.
Windows XP Pro began its sunset cycle on 4/14/09. At this time the only updates are security updates which will continue until April 2014. Vista will begin sunset in 2012
Office 2010 is being released mid of 2010.
Do you have your upgrade plan ready?