@@ -54,6 +54,11 @@ PHP                                                                        NEWS
 - MySQLnd:
   . Fixed field_count not resetting on OK packet. (Kamil Tekiela)
 
+- JSON:
+  . Added a vectorized (SSE2/NEON) fast path to php_json_escape_string()
+    that bulk-copies runs of bytes which need no escaping, speeding up
+    json_encode() on ASCII-heavy strings. (adapik)
+
 - Opcache:
   . Fixed range inference of assignments through typed references.
     (Ilia Alshanetsky)
 
@@ -96,6 +96,13 @@ PHP 8.7 UPGRADE NOTES
 14. Performance Improvements
 ========================================
 
+- JSON:
+  . Improve performance of encoding arrays and objects.
+  . Improved performance of indentation generation in json_encode()
+    when using PHP_JSON_PRETTY_PRINT.
+  . Added an SSE2/NEON fast path for encoding strings that need no
+    escaping, speeding up json_encode() on ASCII-heavy payloads.
+
 - Standard:
   . Improved performance of strcspn() and strpbrk() when searching longer strings
     with a single-byte character mask.