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. 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>
<h4>Documentation</h4>
Filters
<ul>
<li><code>pwps_manage_caps</code> – Filter the capability list used to determine who can use schedule override and “Publish now” actions.</li>
</ul>
The filter receives an array of capabilities. Access is granted when the current user has at least one capability in the array.
Example:
<pre><code>`
</code></pre>
add_filter( ‘pwps_manage_caps’, function( $caps ) { 
 $caps[] = ‘manage_publication_schedule’; 
 return array_unique( $caps ); 
} ); 
 `

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