11th Jan 2011 - is the date to remember if you still managing SQL Server 7.0 SP4 [7.00.1063 or 7.00.1152 build version] (compatibility=70) instances on your production environment, end of extended support for this version!
09th April 2013 - is the date to remember if you are supporting SQL Server 2000 SP4 [8.00.2039 or 8.00.2283 build version] (compatibility=80) instances within production environments, end of extended support for this version! ...read from here...