Add provisional disclaimer

diff --git a/Doc/library/importlib.metadata.rst b/Doc/library/importlib.metadata.rst
index 441850719c1a8bf5db99d8602e1aec1832d39c14..416d8b6f707fc3b41c278afb64249f404f971499 100644 (file)
--- a/Doc/library/importlib.metadata.rst
+++ b/Doc/library/importlib.metadata.rst
@@ -4,6 +4,10 @@
  Using importlib.metadata
 ==========================
 
+.. note::
+   This functionality is provisional and may deviate from the usual
+   version semantics of the standard library.
+
 ``importlib.metadata`` is a library that provides for access to installed
 package metadata.  Built in part on Python's import system, this library
 intends to replace similar functionality in the `entry point