diff -r be944660c56a -r 3d72ae0968f4 wp/wp-includes/blocks/buttons/block.json
--- a/wp/wp-includes/blocks/buttons/block.json	Wed Sep 21 18:19:35 2022 +0200
+++ b/wp/wp-includes/blocks/buttons/block.json	Tue Sep 27 16:37:53 2022 +0200
@@ -1,4 +1,5 @@
 {
+	"$schema": "https://schemas.wp.org/trunk/block.json",
 	"apiVersion": 2,
 	"name": "core/buttons",
 	"title": "Buttons",
@@ -6,18 +7,24 @@
 	"description": "Prompt visitors to take action with a group of button-style links.",
 	"keywords": [ "link" ],
 	"textdomain": "default",
-	"attributes": {
-		"contentJustification": {
-			"type": "string"
-		},
-		"orientation": {
-			"type": "string",
-			"default": "horizontal"
-		}
-	},
 	"supports": {
 		"anchor": true,
-		"align": [ "wide", "full" ]
+		"align": [ "wide", "full" ],
+		"__experimentalExposeControlsToChildren": true,
+		"spacing": {
+			"blockGap": true,
+			"margin": [ "top", "bottom" ],
+			"__experimentalDefaultControls": {
+				"blockGap": true
+			}
+		},
+		"__experimentalLayout": {
+			"allowSwitching": false,
+			"allowInheriting": false,
+			"default": {
+				"type": "flex"
+			}
+		}
 	},
 	"editorStyle": "wp-block-buttons-editor",
 	"style": "wp-block-buttons"