I had officially retired WordPress Automatic Upgrade sometime back, however after several emails to upgrade the plugin and issues for upgrading using WordPress core update in WordPress 2.7 and above, and emails from the Automattic team, I have finally released a update that addresses couple of issues.
The issues that are fixed are as follows.
- Fixed an issue which disallowed core updates to occur when WPAU was updated in WP 2.7 and above.
- Updated the code to display nag on WordPress 2.7 and above.
This takes care of problems faced by several users, you can download the latest update from the official WordPress Automatic Upgrade plugin page, or directly update it using the plugin updater in WordPress core.