Previous posts on this topic: Preparing the Post Editor for Full iframe Integration (November 2025) Blocks in an iframed (template) editor (June 2021) Current Situation All editors except the post editor (site editor, template editor, all block, template and device previews) are currently already iframed unconditionally. The post editor is currently only iframed in core…

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WordPress 7.0 is introducing changes to the iframed editor, continuing a multi-year effort to fully integrate iframe support across all editors. Previously, only the post editor lacked full iframe integration. This post references prior work from November 2025 and June 2021 on the same topic, signaling a long-running architectural migration in the WordPress block editor.

Iframed Editor Changes in WordPress 7.0

What’s Changing in WordPress 7.0 ( #75187 )

Enforcement in the Gutenberg Plugin ( #75475 )