Update to Drupal 8.0.1. For more information, see https://www.drupal.org/node/2627402

core/themes/bartik/templates/block--system-menu-block.html.twig

@@ -14,8 +14,8 @@
     {# When rendering a menu without label, render a menu toggle. #}
     <div class="menu-toggle-target menu-toggle-target-show" id="{{ show_anchor }}"></div>
     <div class="menu-toggle-target" id="{{ hide_anchor }}"></div>
-    <a class="menu-toggle" href="#{{ show_anchor }}">{{ 'Menu'|t }}</a>
-    <a class="menu-toggle menu-toggle--hide" href="#{{ hide_anchor }}">{{ 'Menu'|t }}</a>
+    <a class="menu-toggle" href="#{{ show_anchor }}">{% trans %} Show &mdash; {{ configuration.label }}{% endtrans %}</a>
+    <a class="menu-toggle menu-toggle--hide" href="#{{ hide_anchor }}">{% trans %} Hide &mdash; {{ configuration.label }}{% endtrans %}</a>
     {{ content }}
   </div>
 {% endblock %}

core/themes/bartik/templates/field--node--field-tags.html.twig

@@ -18,7 +18,6 @@
  * - label_display: The display settings for the label.
  *
  * @see template_preprocess_field()
- * @see bartik_preprocess_field()
  */
 #}
 {%
@@ -40,7 +39,7 @@
   {% if not label_hidden %}
     <h3{{ title_attributes.addClass(title_classes) }}>{{ label }}</h3>
   {% endif %}
-  <ul class='links field__items'>
+  <ul class="links field__items">
     {% for item in items %}
       <li{{ item.attributes }}>{{ item.content }}</li>
     {% endfor %}

core/themes/bartik/templates/page.html.twig

@@ -20,12 +20,7 @@
  * Site identity:
  * - front_page: The URL of the front page. Use this instead of base_path when
  *   linking to the front page. This includes the language domain or prefix.
- * - logo: The url of the logo image, as defined in theme settings.
- * - site_name: The name of the site. This is empty when displaying the site
- *   name has been disabled in the theme settings.
- * - site_slogan: The slogan of the site. This is empty when displaying the site
- *   slogan has been disabled in theme settings.
-
+ *
  * Page content (in order of occurrence in the default page.html.twig):
  * - node: Fully loaded node, if there is an automatically-loaded node
  *   associated with the page and the node ID is the second argument in the
@@ -52,7 +47,6 @@
  * - page.breadcrumb: Items for the breadcrumb region.
  *
  * @see template_preprocess_page()
- * @see bartik_preprocess_page()
  * @see html.html.twig
  */
 #}

core/themes/bartik/templates/status-messages.html.twig

@@ -18,8 +18,6 @@
  * - status_headings: List of all status types.
  * - display: (optional) May have a value of 'status' or 'error' when only
  *   displaying messages of that specific type.
- *
- * @see template_preprocess_status_messages()
  */
 #}
 {% block messages %}