Jon Tejnung

This plugin will give you three alternatives for managing your WordPress updates:
<ul>
<li>Update automatically – This updates WordPress/themes/plugins automatically and sends an email to the site admin when an update has been performed.</li>
<li>Update automatically (no email) – Same as the first alternative, but without the email.</li>
<li>Inform about updates once a week – This will send an email to the admin once a week if there are anything that can be updated.</li>
</ul>
Notice that only plugins/themes that resides in the WordPress 
repository will be updated/informed about.
The plugin has not been tested and is not primarily made for multi site-installations.

Simple Automatic Updates

Activate automatic updates or weekly notifications for the site.

Modern Tribe, Inc.

Peter Chester

Description: Hook into plugin and core upgrader to support SVN driven sites. Now you can freely use the WordPress auto upgrade features without worrying about the Subversion impact. Just upgrade in WordPress and then commit the changes in SVN.
Additionally, this plugin displays the current SVN version in the footer of your admin panel and uses the SVN version to append to your CSS and Javascript embeds so that every time you update from SVN, your media files are cleared form cache.
Requires that your system permissions allow shell_exec() to execute svn commands.
Donate – if this is generating enough revenue to support our time it makes all the difference in the world 
https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=7GVFAADMQ96WA
<h4>To Do</h4>
<ul>
<li>Account for SVN externals</li>
<li>Test to ensure the plugin is compatible with your server (that you can run exec svn commands)</li>
<li>Build an auto commit option? Not sure if this is a good idea.</li>
</ul>
<h3>Documentation</h3>
It’s pretty straight forward. When you auto upgrade a plugin or the core, this plugin automatically svn adds and removes files appropriately. That way you can keep your entire WordPress install in SVN.

SVN Auto Upgrade

Description: Hook into plugin and core upgrader to support SVN driven sites. Now you can freely use the WordPress auto upgrade features without worryi …

Simple Automatic Updates vs SVN Auto Upgrade