Today we’re proud to announce the availability of the first release candidate of Oxygen 3.9.

Oxygen 3.9 introduces a native Meta Box integration and some much needed back-end performance fixes, as well as options page support for ACF and many other bug fixes, tweaks, and enhancements. You can learn more about these new features and changes in the alpha blog post at: https://oxygenbuilder.com/2021/09/03/oxygen-3-9-alpha-1-now-available/.

For a list of other bug fixes, tweaks, and polish in 3.9, check out the beta blog posts at https://oxygenbuilder.com/2021/10/08/oxygen-3-9-beta-1-now-available/ and https://oxygenbuilder.com/2021/10/29/oxygen-3-9-beta-2-now-available/.

Existing users can download Oxygen 3.9 RC 1 in the customer portal.

Before using a release candidate in a production environment, backup your site. While release candidates have been tested extensively and are considered stable enough for production environments, you should always proceed with caution when using any alpha, beta, or RC version of Oxygen or the associated add-ons. We will provide official support for sites running release candidate versions of Oxygen and the associated add-ons. If you encounter bugs, please report them on GitHub.

The following is a mostly complete changelog of changes made in Oxygen 3.9 RC 1: