Follow on to [At what point and how should I change the license/Copyright notice when I create a derivative?](https://law.stackexchange.com/questions/1121/at-what-point-and-how-should-i-change-the-license-copyright-notice-when-i-create).


When an author revises and publishes an updated version of her/his previously published work, does the revised edition count as a new (derived) work for purposes of establishing the Copyright date?


For example:


First edition: "Copyright 2010, John Q Author"


Second edition: "Copyright 2017, John Q Author"


I understand that the Copyright of the original would not be extended, but would the revised edition have its own, or would it also expire when the original edition expires?



Changing Copyright date notice for a revised edition