When you get to looking for different releases of a ship kit,,,,,,or when looking for a ship or sister and you don't know if a kit existed,,,,,look at Rajen's ship list
www.quuxuum.org/.../shiprevs.html
if a mold was updated to change ships or depict an upgrade, they tell that also,,,,,,,they don't always have the latest and greatest releases,,,,,,,,but, if it is a re-release, like the two "new" Essex class models,,,,,,,,you can get all the info about the model before it even hits the shelves
Rex