Empire Maker as a sire KD 2007 ?

if Empire maker was retired at the end of 2003,
then he had some newborns early 2004, they are 1 in 2005, and 2 year olds in 2006, which would mean we should see his colts
run this summer, and perhaps one in the Kd 2007,is this correct ?,, and if so who has the colts, how many are there ?