Md Jahidul Islam

This plugin let you enable or disable automatic updates features in WordPress 3.7+ which is enabled by default. You are able to control automatic core, plugin, themes, translation updates and vcs check. You can set permisson to send you email after any type of core updates. 
Since 3.7, a typical WordPress install will now be able to automatically update itself when there is a new minor/security release available without any user input. For example, it will automatically update itself from WordPress 3.7 to 3.7.1. Auto updates are not enabled by default for major releases like 3.7.1 to 3.8. For various reasons, site owners may wish to disable this functionality. This plugin provides an easy way to do so.
IMPORTANT
<ul>
<li>Automatic updates are NOT disabled by default. You have disable from plugin options page.</li>
<li>Automatic plugin and theme updates are NOT enabled by default ,you can enable these.</li>
</ul>
DISABLE AUTOMATIC UPDATES OPTIONS
Enable or Disable features
<ul>
<li>Automatic Updates ( for all types of updates )</li>
<li>Automatic Core Updates</li>
<li>Core development updates, known as the “bleeding edge”</li>
<li>Minor core updates, such as maintenance and security releases</li>
<li>Major core release updates</li>
<li>Automatic Plugin Updates</li>
<li>Automatic Theme Updates</li>
<li>Automatic Translation Updates</li>
<li>VCS Check ( For Developers: To enable automatic updates even if a VCS folder (.git, .hg, .svn etc) was found in the WordPress directory or any of its parent directories )</li>
</ul>
Enable/Disable sending emails for :
<ul>
<li>Successful Updates</li>
<li>Failed Updates</li>
<li>Critically Failed Updates</li>
<li>Update Debug</li>
</ul>

Disable Automatic Updates – Enable/Disable core, plugins, themes, translation updates

Control automatic updates feature. Enable or disable all types of automatic updates including core, plugins, themes, translation etc.

computercourage

This plugin allows you to customize the WordPress update message shown when a new version of WordPress is available. This plugin is targeted toward web developers who want to provide support to their clients when updates are available, and prevent clients from accidentally breaking the site via updates. Developers can enter their contact information, and a personalized message to be shown when the update is available. Finally, developers can also determine which types of users see the upgrade message and which do not.

Custom WP Update Message

Customize and control the WordPress update message in the dashboard.

Disable Automatic Updates – Enable/Disable core, plugins, themes, translation updates vs Custom WP Update Message