clarify datetime type option deprecations

Author: xabbuh

reference/forms/types/datetime.rst

@@ -74,8 +74,10 @@ Defines the ``format`` option that will be passed down to the date field.
 See the :ref:`DateType's format option <reference-forms-type-date-format>`
 for more details.
 
-The ``date_format`` option does not have any effect when the form is rendered
-as an HTML5 datetime input.
+.. versionadded:: 4.3
+
+    Using the ``date_format`` option when the form is rendered as an HTML
+    5 datetime input is deprecated since Symfony 4.3.
 
 date_label
 ~~~~~~~~~~
@@ -96,7 +98,10 @@ date_widget
 
 .. include:: /reference/forms/types/options/date_widget_description.rst.inc
 
-The ``date_widget`` option is ignored when the ``widget`` option is set to ``single_text``.
+.. versionadded:: 4.3
+
+    Using the ``date_widget`` option when the ``widget`` option is set to
+    ``single_text`` is deprecated since Symfony 4.3.
 
 .. include:: /reference/forms/types/options/days.rst.inc
 
@@ -203,7 +208,10 @@ time_widget
 
 Defines the ``widget`` option for the :doc:`TimeType </reference/forms/types/time>`.
 
-The ``time_widget`` option is ignored when the ``widget`` option is set to ``single_text``.
+.. versionadded:: 4.3
+
+    Using the ``time_widget`` option when the ``widget`` option is set to
+    ``single_text`` is deprecated since Symfony 4.3.
 
 .. include:: /reference/forms/types/options/view_timezone.rst.inc
 
@@ -216,11 +224,6 @@ Defines the ``widget`` option for both the :doc:`DateType </reference/forms/type
 and :doc:`TimeType </reference/forms/types/time>`. This can be overridden
 with the `date_widget`_ and `time_widget`_ options.
 
-.. versionadded:: 4.3
-
-    Using the ``date_format``, ``date_widget``, and ``time_widget`` options when
-    the ``widget`` option is set to ``single_text`` is deprecated since Symfony 4.3.
-
 .. include:: /reference/forms/types/options/with_minutes.rst.inc
 
 .. include:: /reference/forms/types/options/with_seconds.rst.inc