One more suggestion to add: While editing a template within the post editor, I went to the code editor mode, and the code editor mode returned the content of the post, not the template's content (what I expected); this is a result of #22528

#30438 is now merged so classic themes can use blocks to build custom templates for pages and all CPTs that support Page templates now.

Added Allow themes to opt-in/out of the "Create new template" flow to the list.

Added Allow themes to opt-in/out of the "Create new template" flow to the list.

That's already possible with the block-templates support flag. you can do remove_theme_support( 'block-templates' );

Short term, are the template and template part menus under Appearance going to be in 5.8?

If not:

• How can user created templates be deleted?
• Editing templates is possible, but you would first have to find a page or post that uses that template, or create a new page or post just to access that template.
• How can users edit templates that are not post or pages, such as search, archive, and 404?

If kept:
The editing views in the appearance>edit templates and block editor>edit template are not the same.
What is the intention with these separate views?

I think these screens are not meant to be shipped at all. So yeah if the template editor makes it to 5.8, we need at least a "delete" template somewhere in the template mode or the template panel.

How can users edit templates that are not post or pages, such as search, archive, and 404?

Assuming dedicated template management (IE Appearance > Templates) doesn't ship in 5.8, it won't be possible to create these templates in the UI. So I think it's fair to assume there will not be an expectation of edit-ability either.

we need at least a "delete" template somewhere in the template mode or the template panel

There is a revert affordance for customised block theme templates in the site editor. We can use that same design for deletion in the template editor. I'll make an issue.

it won't be possible to create these templates in the UI
You meant in the appearance > templates UI? Or not create templates at all via any sort of UI 😕

Not create the templates you mentioned specifically: search, archive, 404, etc.

we need at least a "delete" template somewhere in the template mode or the template panel.

Added this to the list based on the recently created #31076