From WordPress 3.7 updates are more reliable and secure with many different checks and safeguards. It comes with fine-grained update controls for developers and systems admins. Now WordPress runs updates automatically in background while and at the same time you can perform other tasks but as said by the developers you will be needing to update from 3.7 to 3.8. This tutorial is on new WordPress plugin called Background Updates for Major Releases. The plugin extends WordPress automatic updates to major releases and you can keep them running automatically in background like other light updates.
All you will be needing to do is install and activate Background Updates for Major Releases and that’s all. Now automatic background updates are also enabled for major updates like from WordPress 3.7 → WordPress 3.8.