The documentation theme was removed as of version 6.x as you highlighted and it was transitioned to the default theme. You can read the end of support notice here - https://confluence.atlassian.com/conf59/end-of-support-announcements-for-confluence-792499890.html and a transition guide here - https://confluence.atlassian.com/conf59/switch-to-the-default-theme-792498652.html.
Hope this helps,
Hi team, I’m Avinoam, a product manager on Confluence Cloud, and today I’m really excited to let the Community know that all customers can now try out the new editing experience and see some of the ...
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