Title: Block API deprecation warning
Last modified: June 9, 2026

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# Block API deprecation warning

 *  Resolved [Maxwell Morgan](https://wordpress.org/support/users/maxinacube/)
 * (@maxinacube)
 * [1 week ago](https://wordpress.org/support/topic/block-api-deprecation-warning/)
 * Hi there,
 * I am auditing a site that I manage and notice deprecation warnings with the `
   ifso/ifso-block`
 *     ```wp-block-code
       Block with API version 2 or lower is deprecated since version 6.9See: https://developer.wordpress.org/block-editor/reference-guides/block-api/block-api-versions/block-migration-for-iframe-editor-compatibility/Note: The block "ifso/ifso-block" is registered with API version 1. This means that the post editor may work as a non-iframe editor. Since all editors are planned to work as iframes in the future, set the apiVersion field to 3 and test the block inside the iframe editor.
       ```
   
 * According to the guide linked from the warning, “In WordPress 7.1, the post editor
   is planned to always work as an iframe, regardless of the apiVersion of registered
   blocks.”
 * Everything appears to function correctly today, but I wanted to check if an update
   is planned ahead of the WordPress 7.1 iframe editor changes.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [davidjo1983](https://wordpress.org/support/users/davidjo1983/)
 * (@davidjo1983)
 * [5 days, 15 hours ago](https://wordpress.org/support/topic/block-api-deprecation-warning/#post-18935542)
 * Hi [@maxinacube](https://wordpress.org/support/users/maxinacube/),
 * Thanks for letting us know. Yes, we’re aware of the upcoming changes to the WordPress
   editor and plan to address them before WordPress 7.1 is released. Everything 
   should continue to work as expected, but we’ll make the necessary updates to 
   ensure compatibility with the iframe editor changes.
 *  Thread Starter [Maxwell Morgan](https://wordpress.org/support/users/maxinacube/)
 * (@maxinacube)
 * [5 days, 11 hours ago](https://wordpress.org/support/topic/block-api-deprecation-warning/#post-18935745)
 * Awesome, just wanted to check-in on that. Thank you!

Viewing 2 replies - 1 through 2 (of 2 total)

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## Tags

 * [deprecation](https://wordpress.org/support/topic-tag/deprecation/)

 * 3 replies
 * 2 participants
 * Last reply from: [Maxwell Morgan](https://wordpress.org/support/users/maxinacube/)
 * Last activity: [5 days, 11 hours ago](https://wordpress.org/support/topic/block-api-deprecation-warning/#post-18935745)
 * Status: resolved