Exchange 2003 "Lifecyle Information"
Today in the Q&A session for our presentation in Denver, someone asked about the end-of-life for Exchange 2003. This can be found on the Microsoft Support Lifecycle page. The end of mainstream support is planned to be on April 14, 2009 (sooner than I thought) and extended support on April 8, 2014 (later than I thought). You can view this information here.
Exchange Server 2000 mainstream support ended on December 31, 2005 and extended support ends on January 11, 2011.