}
 }
 ```
+### CaptivePortal
+This policy enables or disables captive portal support by setting and locking the preference `network.captive-portal-service.enabled`.
+```
+{
+  "policies": {
+    "CaptivePortal": [true|false]
+}
+```
 ### Certificates
 This policy can be used to install certificates or to read certificates from the system certificate store on Mac and Windows.
 
   }
 }
 ```
+### ExtensionUpdate
+This policy enables or disables extension updates by setting and locking the preference `extensions.update.enabled`.
+```
+{
+  "policies": {
+    "ExtensionUpdate": [true|false]
+}
+```
 ### HardwareAcceleration
 This policy disables hardware acceleration by locking the preference layers.acceleration.disabled to true.
 ```
   }
 }
 ```
+### NetworkPrediction
+This policy enables or disables network prediction (DNS prefetching) by setting and locking the preferences `network.dns.disablePrefetch` and `network.dns.disablePrefetchFromHTTPS`.
+```
+{
+  "policies": {
+    "NetworkPrediction": [true|false]
+}
+```
 ### OverrideFirstRunPage
 This policy allows you to override the first run page. If you leave the URL blank, the first run page will not be displayed.
 ```
 
                        <string>Example2Folder</string>
                </dict>
        </array>
+       <key>CaptivePortal</key>
+       <false/>
        <key>Certificates</key>
        <dict>
                <key>ImportEnterpriseRoots</key>
                        <string>firefox@ghostery.com</string>
                </array>
        </dict>
+       <key>ExtensionUpdate</key>
+       <false/>
        <key>FlashPlugin</key>
        <dict>
                <key>Allow</key>
                <key>Default</key>
                <false/>
        </dict>
+       <key>NetworkPrediction</key>
+       <false/>
        <key>NoDefaultBookmarks</key>
        <true/>
        <key>OfferToSaveLogins</key>
 
 <?xml version="1.0" encoding="utf-8"?>
-<policyDefinitionResources revision="1.4" schemaVersion="1.0" >
+<policyDefinitionResources revision="1.5" schemaVersion="1.0" >
   <displayName/>
   <description/>
   <resources >
       <string id="SUPPORTED_FF63">Firefox 63 or later</string>
       <string id="SUPPORTED_FF64">Firefox 64 or later, Firefox 60.4 ESR or later</string>
       <string id="SUPPORTED_FF66">Firefox 66 or later, Firefox 60.6 ESR or later</string>
+      <string id="SUPPORTED_FF67">Firefox 67 or later, Firefox 60.7 ESR or later</string>
       <string id="SUPPORTED_FF60ESR">Firefox 60 ESR or later</string>
       <string id="firefox">Firefox</string>
       <string id="Permissions_group">Permissions</string>
       <string id="DisableSetDesktopBackground_Explain">If this policy is enabled, the user cannot set an image as their desktop background.
 
 If this policy is disabled or not configured, users can set images as their desktop background.</string>
+      <string id="CaptivePortal">Captive Portal</string>
+      <string id="CaptivePortal_Explain">If this policy is disabled, captive portal support is disabled.
+
+If this policy is enabled or not configured, captive portal support is enabled.</string>
       <string id="Certificates_ImportEnterpriseRoots">Import Enterprise Roots</string>
       <string id="Certificates_ImportEnterpriseRoots_Explain">If this policy is enabled, Firefox will read certificates from the Windows certificate store.
 
       <string id="Extensions_Locked_Explain">If this policy is enabled, you can specify a list of extension IDs that the user will be unable to uninstall or disable.
 
 If this policy is disabled or not configured, no extensions are locked</string>
+      <string id="ExtensionUpdate">Extension Update</string>
+      <string id="ExtensionUpdate_Explain">If this policy is disabled, extensions will not be updated automatically.
+
+If this policy is enabled or not configured, extensions will be updated automatically.</string>
       <string id="HardwareAcceleration">Hardware Acceleration</string>
       <string id="HardwareAcceleration_Explain">If this policy is disabled, hardware acceleration and cannot be enabled.
 
 If this policy is enabled or not configured, hardware acceleration is enabled.</string>
+      <string id="NetworkPrediction">Network Prediction</string>
+      <string id="NetworkPrediction_Explain">If this policy is disabled, network prediction (DNS prefetching) will be disabled.
+
+If this policy is enabled or not configured, network prediction (DNS prefetching) will be enabled.</string>
       <string id="OfferToSaveLogins">Offer to save logins</string>
       <string id="OfferToSaveLogins_Explain">If this policy is enabled or not configured, Firefox will offer to save website logins and passwords.
 
 
 <?xml version="1.0" encoding="utf-8"?>
-<policyDefinitions revision="1.4" schemaVersion="1.0">
+<policyDefinitions revision="1.5" schemaVersion="1.0">
   <policyNamespaces>
     <target prefix="firefox" namespace="Mozilla.Policies.Firefox"/>
     <using prefix="Mozilla" namespace="Mozilla.Policies"/>
       <definition name="SUPPORTED_FF63" displayName="$(string.SUPPORTED_FF63)"/>
       <definition name="SUPPORTED_FF64" displayName="$(string.SUPPORTED_FF64)"/>
       <definition name="SUPPORTED_FF66" displayName="$(string.SUPPORTED_FF66)"/>
+      <definition name="SUPPORTED_FF67" displayName="$(string.SUPPORTED_FF67)"/>
     </definitions>
   </supportedOn>
   <categories>
         <decimal value="0"/>
       </disabledValue>
     </policy>
+    <policy name="CaptivePortal" class="Both" displayName="$(string.CaptivePortal)" explainText="$(string.CaptivePortal_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="CaptivePortal">
+      <parentCategory ref="firefox"/>
+      <supportedOn ref="SUPPORTED_FF67"/>
+      <enabledValue>
+        <decimal value="1"/>
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0"/>
+      </disabledValue>
+    </policy>
     <policy name="Certificates_ImportEnterpriseRoots" class="Both" displayName="$(string.Certificates_ImportEnterpriseRoots)" explainText="$(string.Certificates_ImportEnterpriseRoots_Explain)" key="Software\Policies\Mozilla\Firefox\Certificates" valueName="ImportEnterpriseRoots">
       <parentCategory ref="Certificates"/>
       <supportedOn ref="SUPPORTED_FF60"/>
         <decimal value="0"/>
       </disabledValue>
     </policy>
+    <policy name="ExtensionUpdate" class="Both" displayName="$(string.ExtensionUpdate)" explainText="$(string.ExtensionUpdate_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="ExtensionUpdate">
+      <parentCategory ref="Extensions"/>
+      <supportedOn ref="SUPPORTED_FF67"/>
+      <enabledValue>
+        <decimal value="1"/>
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0"/>
+      </disabledValue>
+    </policy>
+    <policy name="NetworkPrediction" class="Both" displayName="$(string.NetworkPrediction)" explainText="$(string.NetworkPrediction_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="NetworkPrediction">
+      <parentCategory ref="firefox"/>
+      <supportedOn ref="SUPPORTED_FF67"/>
+      <enabledValue>
+        <decimal value="1"/>
+      </enabledValue>
+      <disabledValue>
+        <decimal value="0"/>
+      </disabledValue>
+    </policy>    
     <policy name="OfferToSaveLogins" class="Both" displayName="$(string.OfferToSaveLogins)" explainText="$(string.OfferToSaveLogins_Explain)" key="Software\Policies\Mozilla\Firefox" valueName="OfferToSaveLogins">
       <parentCategory ref="firefox"/>
       <supportedOn ref="SUPPORTED_FF60"/>