diff -r 48c4eec2b7e6 -r 8c2e4d02f4ef wp/wp-includes/blocks/site-title/block.json
--- a/wp/wp-includes/blocks/site-title/block.json	Fri Sep 05 18:40:08 2025 +0200
+++ b/wp/wp-includes/blocks/site-title/block.json	Fri Sep 05 18:52:52 2025 +0200
@@ -11,16 +11,22 @@
 			"type": "number",
 			"default": 1
 		},
+		"levelOptions": {
+			"type": "array",
+			"default": [ 0, 1, 2, 3, 4, 5, 6 ]
+		},
 		"textAlign": {
 			"type": "string"
 		},
 		"isLink": {
 			"type": "boolean",
-			"default": true
+			"default": true,
+			"role": "content"
 		},
 		"linkTarget": {
 			"type": "string",
-			"default": "_self"
+			"default": "_self",
+			"role": "content"
 		}
 	},
 	"example": {
@@ -55,12 +61,19 @@
 			"__experimentalFontStyle": true,
 			"__experimentalFontWeight": true,
 			"__experimentalLetterSpacing": true,
+			"__experimentalWritingMode": true,
 			"__experimentalDefaultControls": {
 				"fontSize": true
 			}
 		},
 		"interactivity": {
 			"clientNavigation": true
+		},
+		"__experimentalBorder": {
+			"radius": true,
+			"color": true,
+			"width": true,
+			"style": true
 		}
 	},
 	"editorStyle": "wp-block-site-title-editor",