Issue #27366: Implement PEP 487

- __init_subclass__ called when new subclasses defined
- __set_name__ called when descriptors are part of a
  class definition
diff --git a/Misc/ACKS b/Misc/ACKS
index 1d96fb2..b9af726 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -1475,6 +1475,7 @@
 Julian Taylor
 Monty Taylor
 Anatoly Techtonik
+Martin Teichmann
 Gustavo Temple
 Mikhail Terekhov
 Victor Terrón
diff --git a/Misc/NEWS b/Misc/NEWS
index 6ad1c3a..98814c3 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -31,6 +31,10 @@
 - Issue #27514: Make having too many statically nested blocks a SyntaxError
   instead of SystemError.
 
+- Issue #27366: Implemented PEP 487 (Simpler customization of class creation).
+  Upon subclassing, the __init_subclass__ classmethod is called on the base
+  class. Descriptors are initialized with __set_name__ after class creation.
+
 Library
 -------