diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index b989ea6c29..b1aa6a880a 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -23,6 +23,10 @@ Deprecation Notices
 * eal: The function ``rte_eal_remote_launch`` will return new error codes
   after read or write error on the pipe, instead of calling ``rte_panic``.
 
+* eal: The ``lcore_config`` struct and global symbol will be made private to
+  remove it from the externally visible ABI and allow it to be updated in the
+  future.
+
 * eal: both declaring and identifying devices will be streamlined in v18.11.
   New functions will appear to query a specific port from buses, classes of
   device and device drivers. Device declaration will be made coherent with the