Facebook developers :: Facebook Pages are valuable tools for marketing your app or your brand. Recently, we added several powerful features that simplify managing and sponsoring Page posts: Scheduled page posts, a feature, which enables you to create and schedule page posts to be published at a future time. Unpublished page posts allow for posts that can be promoted as sponsored Page posts, but they don't show up on the Page's timeline. And last but not least Ads Creator permission, so that you can enable third party apps to become a Page admin with a restricted set of rights to manage ads for the page.
Announcement by Omid Saadati, developers.facebook.com
HT: Joel Falconer, The Next Web