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WordPress 6.0 brings three new features to Themes to offer site owners patterns. Register selected patterns from the public pattern directory, add theme patterns to a separate folder /patterns, and add patterns that can be offered to use when creating a new page.
Pattern registration from Pattern Directory for themes
With WordPress 6.0 themes can easily register patterns from Pattern Directory through theme.json. To accomplish this, themes should use the new patterns top level key in theme.json.