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Plugin Update Message Customizer changes the default “There is a new version of PLUGIN available.” message on WordPress’ Plugin listing page.
This is useful for multiple scenarios: 
* If using WordPress within a dev/staging/live production environment, this plugin is great to install on the live and staging servers so that end users won’t update a plugin and therefore break the tracked remote branch. 
* On sites where you only want specific users to update the plugins, this will prevent users from clicking “update now.” 
* If you want to add additional options (e.g., “View version X.Y.Z details, update now, or mark as in testing.”) to the plugin new version message, e.g., “mark as in testing” to let others know the plugin is currently being tested and they should not yet update it on production.
Of course, other plugins and functions would prevent all plugin notifications. However, for the average user who logs into their live/production site instead of local/dev, this would still allow them to see that updates EXIST, however will just prevent them from performing them in an environment they should not be updated in.
Upcoming features: 
* Backwards compatibility (to be tested starting with WordPress 4.5) 
* Ability to hide the number of plugins with updates next to “Plugins” in admin sidebar) 
* Ability to hide all update notifications 
* Ability to prevent all automatic updates 
* Action on plugins with update message to apply the label “In testing,” which lets other users know that the plugin’s update is currently being tested in dev 
* Functionality to hide the plugin in the Plugins listing page

Notification Customizer

Plugin Update Message Customizer changes the default "There is a new version of PLUGIN available." message on Wordpress' Plugin listing …

David Francisco

Site Update Logger gives site owners and agencies full visibility into every update event happening across WordPress core, plugins, and themes. It records version changes, install/uninstall events, activations, deactivations, and theme switches while also capturing PHP errors that occur during updates. Logs are organized per month, downloadable, and annotated with custom notes so you can build an auditable change history that is easy to search and share.
<h4>Key Features</h4>
<ul>
<li>Logs WordPress core updates with before/after versions</li>
<li>Tracks plugin and theme lifecycle events: install, update, activation, deactivation, and deletion</li>
<li>Captures theme switch activity and provides network scope for plugin actions</li>
<li>Stores logs in monthly files under the uploads folder: <code>wp-content/uploads/site-update-logger/logs/</code></li>
<li>Provides an admin screen with filters, downloads, and user notes</li>
<li>Includes bilingual English/Spanish interface strings with compiled MO files</li>
<li>Offers a settings page to control whether data is removed on uninstall</li>
<li>Protects actions with capability checks, nonces, and sanitized inputs</li>
</ul>
<h4>Why You’ll Love It</h4>
<ul>
<li>Clear history: Know exactly what changed and when, even months later.</li>
<li>Operational notes: Add commentary directly in the log for each deployment window.</li>
<li>Safe uninstall: Choose to keep or remove log data when removing the plugin.</li>
<li>Translation-ready: Ships with Spanish translations and an up-to-date POT file.</li>
</ul>

Site Update Logger

Track core/plugin/theme updates with bilingual logs, monthly archives, and admin UI. Spanish readme: readme-es.txt

Notification Customizer vs Site Update Logger