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

sites/default/default.settings.php

@@ -223,13 +223,13 @@ $databases = array();
  * Location of the site configuration files.
  *
  * The $config_directories array specifies the location of file system
- * directories used for configuration data. On install, "active" and "staging"
- * directories are created for configuration. The staging directory is used for
+ * directories used for configuration data. On install, "active" and "sync"
+ * directories are created for configuration. The sync directory is used for
  * configuration imports; the active directory is not used by default, since the
  * default storage for active configuration is the database rather than the file
  * system (this can be changed; see "Active configuration settings" below).
  *
- * The default location for the active and staging directories is inside a
+ * The default location for the active and sync directories is inside a
  * randomly-named directory in the public files path; this setting allows you to
  * override these locations. If you use files for the active configuration, you
  * can enhance security by putting the active configuration outside your
@@ -238,8 +238,7 @@ $databases = array();
  * Example:
  * @code
  *   $config_directories = array(
- *     CONFIG_ACTIVE_DIRECTORY => '/some/directory/outside/webroot',
- *     CONFIG_STAGING_DIRECTORY => '/another/directory/outside/webroot',
+ *     CONFIG_SYNC_DIRECTORY => '/another/directory/outside/webroot',
  *   );
  * @endcode
  */
@@ -454,6 +453,19 @@ if ($settings['hash_salt']) {
 # $settings['file_chmod_directory'] = 0775;
 # $settings['file_chmod_file'] = 0664;
 
+/**
+ * Public file base URL:
+ *
+ * An alternative base URL to be used for serving public files. This must
+ * include any leading directory path.
+ *
+ * A different value from the domain used by Drupal to be used for accessing
+ * public files. This can be used for a simple CDN integration, or to improve
+ * security by serving user-uploaded files from a different domain or subdomain
+ * pointing to the same server. Do not include a trailing slash.
+ */
+# $settings['file_public_base_url'] = 'http://downloads.example.com/files';
+
 /**
  * Public file path:
  *
@@ -515,28 +527,6 @@ if ($settings['hash_salt']) {
  */
 # $settings['maintenance_theme'] = 'bartik';
 
-/**
- * Base URL (optional).
- *
- * If Drupal is generating incorrect URLs on your site, which could
- * be in HTML headers (links to CSS and JS files) or visible links on pages
- * (such as in menus), uncomment the Base URL statement below (remove the
- * leading hash sign) and fill in the absolute URL to your Drupal installation.
- *
- * You might also want to force users to use a given domain.
- * See the .htaccess file for more information.
- *
- * Examples:
- *   $base_url = 'http://www.example.com';
- *   $base_url = 'http://www.example.com:8888';
- *   $base_url = 'http://www.example.com/drupal';
- *   $base_url = 'https://www.example.com:8888/drupal';
- *
- * It is not allowed to have a trailing slash; Drupal will add it
- * for you.
- */
-# $base_url = 'http://www.example.com';  // NO trailing slash!
-
 /**
  * PHP settings:
  *
@@ -610,16 +600,16 @@ if ($settings['hash_salt']) {
  *
  * The options below return a simple, fast 404 page for URLs matching a
  * specific pattern:
- * - $conf['system.performance']['fast_404']['exclude_paths']: A regular
+ * - $config['system.performance']['fast_404']['exclude_paths']: A regular
  *   expression to match paths to exclude, such as images generated by image
  *   styles, or dynamically-resized images. The default pattern provided below
  *   also excludes the private file system. If you need to add more paths, you
  *   can add '|path' to the expression.
- * - $conf['system.performance']['fast_404']['paths']: A regular expression to
+ * - $config['system.performance']['fast_404']['paths']: A regular expression to
  *   match paths that should return a simple 404 page, rather than the fully
  *   themed 404 page. If you don't have any aliases ending in htm or html you
  *   can add '|s?html?' to the expression.
- * - $conf['system.performance']['fast_404']['html']: The html to return for
+ * - $config['system.performance']['fast_404']['html']: The html to return for
  *   simple 404 pages.
  *
  * Remove the leading hash signs if you would like to alter this functionality.

sites/default/settings.pantheon.php

@@ -38,12 +38,12 @@ $is_installer_url = (strpos($_SERVER['SCRIPT_NAME'], '/core/install.php') === 0)
  */
 if ($is_installer_url) {
   $config_directories = array(
-    CONFIG_STAGING_DIRECTORY => 'sites/default/files',
+    CONFIG_SYNC_DIRECTORY => 'sites/default/files',
   );
 }
 else {
   $config_directories = array(
-    CONFIG_STAGING_DIRECTORY => 'sites/default/config',
+    CONFIG_SYNC_DIRECTORY => 'sites/default/config',
   );
 }
 

sites/example.settings.local.php

@@ -52,12 +52,25 @@ $config['system.performance']['js']['preprocess'] = FALSE;
 /**
  * Disable the render cache (this includes the page cache).
  *
+ * Note: you should test with the render cache enabled, to ensure the correct
+ * cacheability metadata is present. However, in the early stages of
+ * development, you may want to disable it.
+ *
  * This setting disables the render cache by using the Null cache back-end
  * defined by the development.services.yml file above.
  *
  * Do not use this setting until after the site is installed.
  */
-$settings['cache']['bins']['render'] = 'cache.backend.null';
+# $settings['cache']['bins']['render'] = 'cache.backend.null';
+
+/**
+ * Disable Dynamic Page Cache.
+ *
+ * Note: you should test with Dynamic Page Cache enabled, to ensure the correct
+ * cacheability metadata is present (and hence the expected behavior). However,
+ * in the early stages of development, you may want to disable it.
+ */
+# $settings['cache']['bins']['dynamic_page_cache'] = 'cache.backend.null';
 
 /**
  * Allow test modules and themes to be installed.

sites/example.sites.php

@@ -50,6 +50,6 @@
  * @endcode
  *
  * @see default.settings.php
- * @see conf_path()
+ * @see \Drupal\Core\DrupalKernel::getSitePath()
  * @see https://www.drupal.org/documentation/install/multi-site
  */