Update to drupal 8.0.0-rc1. For more information, see https://www.drupal.org/node/2582663

core/modules/book/config/install/core.base_field_override.node.book.promote.yml

@@ -7,7 +7,7 @@ id: node.book.promote
 field_name: promote
 entity_type: node
 bundle: book
-label: Promoted to front page
+label: 'Promoted to front page'
 description: ''
 required: false
 translatable: true
@@ -15,6 +15,7 @@ default_value:
   -
     value: 0
 default_value_callback: ''
-settings: {  }
-third_party_settings: {  }
+settings:
+  on_label: 'On'
+  off_label: 'Off'
 field_type: boolean

core/modules/book/config/install/core.entity_form_display.node.book.default.yml

@@ -5,26 +5,18 @@ dependencies:
     - field.field.node.book.body
     - node.type.book
   module:
-    - entity_reference
     - text
 id: node.book.default
 targetEntityType: node
 bundle: book
 mode: default
 content:
-  title:
-    type: string_textfield
-    weight: -5
+  body:
+    type: text_textarea_with_summary
+    weight: 26
     settings:
-      size: 60
-      placeholder: ''
-    third_party_settings: {  }
-  uid:
-    type: entity_reference_autocomplete
-    weight: 5
-    settings:
-      match_operator: CONTAINS
-      size: 60
+      rows: 9
+      summary_rows: 3
       placeholder: ''
     third_party_settings: {  }
   created:
@@ -44,13 +36,19 @@ content:
       display_label: true
     weight: 16
     third_party_settings: {  }
-  body:
-    type: text_textarea_with_summary
-    weight: 26
+  title:
+    type: string_textfield
+    weight: -5
     settings:
-      rows: 9
-      summary_rows: 3
+      size: 60
+      placeholder: ''
+    third_party_settings: {  }
+  uid:
+    type: entity_reference_autocomplete
+    weight: 5
+    settings:
+      match_operator: CONTAINS
+      size: 60
       placeholder: ''
     third_party_settings: {  }
 hidden: {  }
-third_party_settings: {  }

core/modules/book/config/install/core.entity_view_display.node.book.default.yml

@@ -20,6 +20,4 @@ content:
     third_party_settings: {  }
   links:
     weight: 101
-hidden:
-  langcode: true
-third_party_settings: {  }
+hidden: {  }

core/modules/book/config/install/core.entity_view_display.node.book.teaser.yml

@@ -22,6 +22,4 @@ content:
     third_party_settings: {  }
   links:
     weight: 101
-hidden:
-  langcode: true
-third_party_settings: {  }
+hidden: {  }

core/modules/book/config/install/core.entity_view_mode.node.print.yml

@@ -1,12 +1,12 @@
-id: node.print
-label: Print
+langcode: en
 status: false
-cache: true
-targetEntityType: node
 dependencies:
-  module:
-    - book
-    - node
   enforced:
     module:
       - book
+  module:
+    - node
+id: node.print
+label: Print
+targetEntityType: node
+cache: true

core/modules/book/config/install/field.field.node.book.body.yml

@@ -18,5 +18,4 @@ default_value: {  }
 default_value_callback: ''
 settings:
   display_summary: true
-third_party_settings: {  }
 field_type: text_with_summary

core/modules/book/config/install/node.type.book.yml

@@ -1,8 +1,6 @@
 langcode: en
 status: true
 dependencies:
-  module:
-    - book
   enforced:
     module:
       - book
@@ -11,7 +9,5 @@ type: book
 description: '<em>Books</em> have a built-in hierarchical navigation. Use for handbooks or tutorials.'
 help: ''
 new_revision: false
-display_submitted: true
 preview_mode: 1
 display_submitted: true
-third_party_settings: {  }