Add documentation note.

ed232334d9b04f9c695e0bd061317da14b2d6da3
commit ed232334d9b04f9c695e0bd061317da14b2d6da3
diff --git a/Doc/library/faulthandler.rst b/Doc/library/faulthandler.rst
@@ -91,6 +91,10 @@ Fault handler state
       The dump now mentions if a garbage collector collection is running
       if *all_threads* is true.
 
+   .. versionchanged:: next
+      Only the current thread is dumped if the :term:`GIL` is disabled and
+      other threads are running.
+
 .. function:: disable()
 
    Disable the fault handler: uninstall the signal handlers installed by