Takashi Murakami

If you are not logged in, it will not hide the current public posts. ( Only one generation, but allows the future of the article published. ) 
公開記事を更新（予約投稿）した状態であっても、..訪問者が予約投稿前の記事を閲覧できるようになる

Fixed Future Posts

Plug-in ( Fixed Future Posts ) for the WordPress.

benplum

Presswell

Presswell Publication Schedule adds precise, automated control over how often new posts are published, and is the perfect solution for ensuring a consistent editorial calendar. Simply configure the days and times when posts should be published and new posts will be automatically scheduled for the next available time slot.
Features
<ul>
<li>Automatically schedule posts based on simple day and time rules</li>
<li>Ability to override scheduled date for Admins and Editors</li>
<li>‘Publish Now’ actions for Admins and Editors</li>
</ul>

Presswell Publication Schedule

Simple and precise post publishing control for WordPress based on day of the week and time of day.

Fixed Future Posts vs Presswell Publication Schedule