Home-AssistantConfig/config/automation/System/update_notification.yaml

- alias: "Update Available Notification"
  hide_entity: True
  trigger:
    platform: state
    entity_id: updater.updater

  condition:
    - condition: template
      value_template: "{{ states('updater.updater') != 'unknown' }}"

  action:
    - service: script.notify_engine
      data_template:
        value1: "Home Assistant {{ states.updater.updater.state }} is now available. {{now().strftime('%Y-%m-%d %I:%M %p')}}"
        who: 'carlo'

    - service: ifttt.trigger
      data_template: {"event":"GitPost", "value1":"Home Assistant {{ states.updater.updater.state }} is now available.", "value2":"{{ states.updater.updater.state }}"}

    - service: script.tweet_engine_image
      data_template:
        tweet: >-
          {% macro getIntro() %}
           {{- [
              "Woohoo! ",
              "BAM! ",
              "Look at that! "
              ] | random -}}
            {% endmacro %}
            {% macro getVersion() %}
          "New version of @Home_Assistant! Cannot wait for @CCostan to install it! - {{ states('updater.updater') }} (http://www.vmwareinfo.com/2017/07/my-smart-home-look-at-parts-that-make.html)"
            {% endmacro %}
            {%- macro getRandomSnark() -%}
           {{- [
             " It’s like Patch Tuesday, but without the fail. #homeassistant",
             " Get in my SD Card! #homeassistant",
             " Shut up and take my ones and zeros! #homeassistant",
             " Seriously, you want some of this! #homeassistant",
             " Be sure to read the breaking changes! ",
             ""
             ] | random -}}
            {%- endmacro -%}

            {# a macro that removes all newline characters, empty spaces, and returns formatted text  #}
            {%- macro cleanup(data) -%}
             {%- for item in data.split("\n")  if item | trim != "" -%}
               {{ item | trim }} {% endfor -%}
            {%- endmacro -%}

            {# a macro to call all macros :)  #}
            {%- macro mother_of_all_macros() -%}
             {{ getIntro() }}
             {{ getVersion() }}
             {{ getRandomSnark() }}

            {%- endmacro -%}

           {# Call the macro  #}
           {{- cleanup(mother_of_all_macros()) -}}

        image: >-
          {{ [
          "/config/www/custom_ui/floorplan/images/branding/repo_ad.png",
          "/config/www/custom_ui/floorplan/images/branding/repo_ad2.png",
          "/config/www/custom_ui/floorplan/images/branding/repo_ad3.png",
          "/config/www/custom_ui/floorplan/images/branding/repo_ad4.png"
          ] | random }}

    - service: notify.html5
      data_template:
        title: "Update Available"
        message: "Home Assistant {{ states('updater.updater') }} is available. - {{ as_timestamp(now()) | timestamp_custom('%I:%M:%S %p %d%b%Y', true) }}"

    - service: persistent_notification.create
      data:
        title: "Update Available"
        message: "Home Assistant {{ states('updater.updater') }} is available. - {{ as_timestamp(now()) | timestamp_custom('%I:%M:%S %p %d%b%Y', true) }}"
        notification_id: "update_available"