WordPress 5.6 planning is underway, and, notably, this release will feature an all-women release squad. Josepha Haden hopes this experience will make it more likely that those who are involved will “return as contributors to Core and elsewhere.” 👩💻
Meanwhile, there have been some snags reported by people upgrading to WordPress 5.5 that has to do with themes and plugins that have outdated JavaScript dependencies. I appreciated this simple and easy to understand post by Kristen Wright from iThemes explaining the problem and how to deal with it.
If you have a broken site after updating to WordPress 5.5, install the jQuery Migrate Helper plugin on your site. It will re-enable the jQuery Migrate tool that was removed from core with WordPress 5.5.