diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-includes/blocks/button/block.json
--- a/wp/wp-includes/blocks/button/block.json	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-includes/blocks/button/block.json	Fri Sep 05 18:52:52 2025 +0200
@@ -26,34 +26,34 @@
 			"source": "attribute",
 			"selector": "a",
 			"attribute": "href",
-			"__experimentalRole": "content"
+			"role": "content"
 		},
 		"title": {
 			"type": "string",
 			"source": "attribute",
 			"selector": "a,button",
 			"attribute": "title",
-			"__experimentalRole": "content"
+			"role": "content"
 		},
 		"text": {
 			"type": "rich-text",
 			"source": "rich-text",
 			"selector": "a,button",
-			"__experimentalRole": "content"
+			"role": "content"
 		},
 		"linkTarget": {
 			"type": "string",
 			"source": "attribute",
 			"selector": "a",
 			"attribute": "target",
-			"__experimentalRole": "content"
+			"role": "content"
 		},
 		"rel": {
 			"type": "string",
 			"source": "attribute",
 			"selector": "a",
 			"attribute": "rel",
-			"__experimentalRole": "content"
+			"role": "content"
 		},
 		"placeholder": {
 			"type": "string"
@@ -85,6 +85,16 @@
 			}
 		},
 		"typography": {
+			"__experimentalSkipSerialization": [
+				"fontSize",
+				"lineHeight",
+				"fontFamily",
+				"fontWeight",
+				"fontStyle",
+				"textTransform",
+				"textDecoration",
+				"letterSpacing"
+			],
 			"fontSize": true,
 			"lineHeight": true,
 			"__experimentalFontFamily": true,
@@ -93,6 +103,7 @@
 			"__experimentalTextTransform": true,
 			"__experimentalTextDecoration": true,
 			"__experimentalLetterSpacing": true,
+			"__experimentalWritingMode": true,
 			"__experimentalDefaultControls": {
 				"fontSize": true
 			}
@@ -121,7 +132,6 @@
 				"width": true
 			}
 		},
-		"__experimentalSelector": ".wp-block-button .wp-block-button__link",
 		"interactivity": {
 			"clientNavigation": true
 		}
@@ -131,5 +141,11 @@
 		{ "name": "outline", "label": "Outline" }
 	],
 	"editorStyle": "wp-block-button-editor",
-	"style": "wp-block-button"
+	"style": "wp-block-button",
+	"selectors": {
+		"root": ".wp-block-button .wp-block-button__link",
+		"typography": {
+			"writingMode": ".wp-block-button"
+		}
+	}
 }