Add a blurb

encukou · encukou · commit 7a191003c7e1 · 2021-07-20T16:34:28.000+02:00
diff --git a/Misc/NEWS.d/next/C API/2021-07-20-16-21-06.bpo-42747.rRxjUY.rst b/Misc/NEWS.d/next/C API/2021-07-20-16-21-06.bpo-42747.rRxjUY.rst
@@ -0,0 +1,4 @@
+The ``Py_TPFLAGS_HAVE_VERSION_TAG`` type flag now does nothing. The
+``Py_TPFLAGS_HAVE_AM_SEND`` flag (which was added in 3.10) is removed. Both
+were unnecessary because it is not possible to have type objects with the
+relevant fields missing.
