SDM36

A Coming Soon plugin which gives you extensive control over what is displayed. 
Includes FontAwesome social media icons and code editor for custom css.
Logged in visitors have access to the site as usual whilst visitors to the site who are not logged in will see the coming soon page.
Display the site title and header image, a featured image, title and content from a selected page or a combination of the two.
Page content accepts shortcodes allowing users to fully customise their coming soon page.
Fullscreen background images should be 1920px x 1080px and web optimised to reduce loading times.
Includes countdown timer option, leave blank to omit.
All Options:
<ol>
<li>Coming Soon Page Active</li>
<li>Choose the content page</li>
<li>Enable Social Icons</li>
<li>Pick a Background colour</li>
<li>Pick a Text colour</li>
<li>Pick a Box colour</li>
<li>Box Opacity:</li>
<li>Border Shadow for Box</li>
<li>Countdown Timer Date</li>
<li>Choose the logo</li>
<li>Choose the title</li>
<li>Choose the content</li>
<li>Choose the background</li>
<li>Text alignment</li>
<li>Custom CSS styles</li>
</ol>
<h3>Notes:</h3>
The plugin will only display the site title and or logo until a content page is chosen.

NNM Coming Soon Page

A Coming Soon plugin which gives you extensive control over what is displayed.

destastic

Local Landing pages allows you to redirect the user on their first site visit based on their browser’s default language. It uses the HTTP_ACCEPT_LANGUAGE header to determine your visitor’s language. The menu in Settings > Local Landing Pages allows you to specify the path to a landing page for any particular language.

Local Landing Pages

Reads the user-agent's HTTP_ACCEPT_LANGUAGE value and loads a page with a slug named after the language code.

NNM Coming Soon Page vs Local Landing Pages