Customers who joined Pagecord after 1st October 2025 will already be using the new editor. Older customers will get the old editor unless you've asked to be opted in to get the new one.
The new editor doesn't support image galleries like the old one did which is why this hasn't been rolled out to everyone yet. It doesn't look like gallery support will happen quickly (although I submitted a PR to show how it might be done) so it could be that I roll out the new editor without this feature so I don't have to keep maintaining two editors.
This would be a slight regression for a very small number of customers, but I'm hoping the benefits of the new editor outweigh this temporary loss (i.e. proper paragraphs, horizontal rule, syntax highlighting, and - soon - colour highlighting).