all links on this page, that includes the string "4.0" should change it to "4.x", as the docs now covers the entire 4.x series:
http://ez.no/doc/

it is not a given that a newbie ez publish user will find it intuitive to click on the 4.0 links to acquire information about version 4.x (4.0, 4.1, 4.2, etc).