Hi,
We don't have such an extension. However I think it's possible to do that, my idea is that when you create your article, just set a public date for it then it will be published by the set time
http://easycaptures.com/fs/uploaded/531/3513327917.pngAnd assign a news show pro module to some position, get data source from the category containing that article, when the article is published it will be showed up automatically in the module.
Let me know if it helps.
Cheers,