Err, no it won't. PD isn't the licensing for Wikinews any more; it moved to CC-BY-SA 2.5 a while ago.
It's CC-BY, not BY-SA. The license doesn't require share alike, which makes the content usable in Wikipedia (though not vice versa).
http://creativecommons.org/licenses/by/2.5/ http://en.wikinews.org/wiki/Wikinews:Copyright
Angela.