[ trivial ] indicate fCV considerations forthcoming

Author: andf-mongodb

source/release-notes/5.0-downgrade-sharded-cluster.txt

@@ -93,15 +93,15 @@ The following steps are necessary only if fCV has ever been set to
 Remove all persisted |newversion| |features| that are incompatible with
 |oldversion|. These include:
 
-- No persisted features currently.
+- This list is forthcoming.
 
 3. Remove |newversion| Features
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Remove all persisted features that use |newversion| features. These
 include but are not limited to:
 
-- No persisted features currently.
+- This list is forthcoming.
 
 .. |binary| replace:: any :binary:`~bin.mongod`/:binary:`~bin.mongos` instance