The third Release Candidate (RC3) for WordPress 5.9 is here!
Testing the Release
You can test the WordPress 5.9 release candidate in three ways:
Option 1: Install and activate the WordPress Beta Tester plugin (select the “Bleeding edge” channel and “Beta/RC Only” stream).
Option 2: Download the beta version here (zip).
Option 3: When using WP-CLI to upgrade from Beta 1, 2, 3, 4, RC1, or RC2 on a case-insensitive filesystem, please use the following command sequence:
wp core update --version=5.9-RC3 wp core update --version=5.9-RC3 --force
How to Help
Help test WordPress 5.9 features – this post provides a guide to set up your testing environment, a list of testable features, and information about how to submit feedback you find as you go.
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Developers and those interested in more background to the features can find more in the Field Guide. You can also follow the 5.9 development cycle and timeline.
If you have found a bug, you can post the details to the Alpha/Beta area in the support forums.
If you are comfortable writing a reproducible bug report, you can file one on WordPress Trac, where you can also check the issue against a list of known bugs.