If you publish a folder, structure group or template in the new UI, you get the option to only republish content which was previously published. However, this option is missing when publishing pages and components.

Since it is now possible to select many child publications when you publish a page or component, this option would be really handy to have for pages and components as well. Without it, editors might accidentally publish a new item to a web site where this should not be present.

So please introduce the 'republish only' option to the 'page publish' and 'component publish' screens. 

It is fine if you do this in the new UI only.