Add breaking changes and version specific upgrade notes for Umbraco 18#8049
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AndyButland wants to merge 10 commits into
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Add breaking changes and version specific upgrade notes for Umbraco 18#8049AndyButland wants to merge 10 commits into
AndyButland wants to merge 10 commits into
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| ## Introduction | ||
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| Version 17 introduces the single block property editor. Its purpose is to replace the "single mode" option that exists in the blocklist property editor. This is part of the more general effort to ensure type consistency within core property editors. | ||
| Version 17 introduced the single block property editor. Its purpose is to replace the "single mode" option that exists in the blocklist property editor. This is part of the more general effort to ensure type consistency within core property editors. |
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🚫 [vale] reported by reviewdog 🐶
[UmbracoDocs.Spelling] Check the word 'blocklist' for typos.
Corrected capitalization of 'Block List' in the introduction.
sofietoft
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May 12, 2026
lauraneto
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📋 Description
Add breaking changes and version specific upgrade notes for Umbraco 18 (the main updates being in
18/umbraco-cms/fundamentals/setup/upgrading/version-specific/README.md).Also updates various existing pages to reflect these updates for 18, and links to the 18 version of the API documentation.
📎 Related Issues (if applicable)
Fixes #7883
https://github.com/umbraco/Umbraco-CMS/pulls?page=1&q=is%3Apr+label%3Acategory%2Fbreaking+label%3Arelease%2F18.0.0+is%3Aclosed
✅ Contributor Checklist
I've followed the Umbraco Documentation Style Guide and can confirm that:
Product & Version (if relevant)
CMS 18.0
Deadline (if relevant)
To be published along with the beta release if possible, on Wednesday 13th May.