# What's New With 3.0.0

ContentBox 3.0.0 is a major release and with a completely rewritten administration module. If you are upgrading from a previous release, please make sure you read the [Upgrading Guide](https://contentbox.ortusbooks.com/v3.x/intro/introduction/whats-new-with-3.0.0/upgrading-to-3.0.0). You can find the full release notes here: [Release Notes](https://ortussolutions.atlassian.net/secure/ReleaseNote.jspa?projectId=10008\&version=12908)

ContentBox 3 is a collection of more than 150 tickets resolved. It has been a massive undertaking with some great results. We have divided all the major updates in this release by category below:

* [Architecture](https://contentbox.ortusbooks.com/v3.x/intro/introduction/whats-new-with-3.0.0/architecture)
* [Administrator](https://contentbox.ortusbooks.com/v3.x/intro/introduction/whats-new-with-3.0.0/administrator)
* [Themes](https://contentbox.ortusbooks.com/v3.x/intro/introduction/whats-new-with-3.0.0/themes)
* [Front End](https://contentbox.ortusbooks.com/v3.x/intro/introduction/whats-new-with-3.0.0/front-end)