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.

Johan van der Wijk

This plugin disables all WordPress updates (core, plugins and themes). This can be useful if you have multiple environments such as a live and staging server and you don’t want your users to use the update functionality.
This plugin not only disables the update mechanism for the core, plugins and themes, but it also removes the update menu item from the left navigation menu in the admin dashboard.

Disable Updates for WordPress Core, Plugins and Themes

Disables the WordPress update checking and notification system for all core, plugin and theme updates.

Disable Automatic Updates – Enable/Disable core, plugins, themes, translation updates vs Disable Updates for WordPress Core, Plugins and Themes