To edit a news item, including changing the date, changing the text, schedule and whether an article is published or not published and private or not private:
You can find out more about each of these fields and how they work in The News Screen Explained.
If you wish to simply change the news item to published or not published:
You can also use the bulk update option to set a news item as private/not private and published/not published or to delete it. Using this feature, you can update more than one news item at a time.
----------------------------------------------------------------------
This functionality works in version 3.5 and above