old_contents: """Support for Home Assistant Updater binary sensors."""
  from __future__ import annotations
  
  from homeassistant.components.binary_sensor import BinarySensorEntity
  from homeassistant.helpers.update_coordinator import CoordinatorEntity
  
  from . import ATTR_NEWEST_VERSION, ATTR_RELEASE_NOTES, DOMAIN as UPDATER_DOMAIN
  
  
  async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
      """Set up the updater binary sensors."""
      if discovery_info is None:
          return
  
      async_add_entities([UpdaterBinary(hass.data[UPDATER_DOMAIN])])
  
  
  class UpdaterBinary(CoordinatorEntity, BinarySensorEntity):
      """Representation of an updater binary sensor."""
  
      @property
      def name(self) -> str:
          """Return the name of the binary sensor, if any."""
          return "Updater"
  
      @property
      def unique_id(self) -> str:
          """Return a unique ID."""
          return "updater"
  
      @property
      def is_on(self) -> bool | None:
          """Return true if the binary sensor is on."""
          if not self.coordinator.data:
              return None
          return self.coordinator.data.update_available
  
      @property
      def extra_state_attributes(self) -> dict | None:
          """Return the optional state attributes."""
          if not self.coordinator.data:
              return None
          data = {}
          if self.coordinator.data.release_notes:
              data[ATTR_RELEASE_NOTES] = self.coordinator.data.release_notes
          if self.coordinator.data.newest_version:
              data[ATTR_NEWEST_VERSION] = self.coordinator.data.newest_version
          return data
  
new_contents: """Support for Home Assistant Updater binary sensors."""
  from __future__ import annotations
  
  from homeassistant.components.binary_sensor import (
      DEVICE_CLASS_UPDATE,
      BinarySensorEntity,
  )
  from homeassistant.helpers.update_coordinator import CoordinatorEntity
  
  from . import ATTR_NEWEST_VERSION, ATTR_RELEASE_NOTES, DOMAIN as UPDATER_DOMAIN
  
  
  async def async_setup_platform(hass, config, async_add_entities, discovery_info=None):
      """Set up the updater binary sensors."""
      if discovery_info is None:
          return
  
      async_add_entities([UpdaterBinary(hass.data[UPDATER_DOMAIN])])
  
  
  class UpdaterBinary(CoordinatorEntity, BinarySensorEntity):
      """Representation of an updater binary sensor."""
  
      _attr_device_class = DEVICE_CLASS_UPDATE
      _attr_name = "Updater"
      _attr_unique_id = "updater"
  
      @property
      def is_on(self) -> bool | None:
          """Return true if the binary sensor is on."""
          if not self.coordinator.data:
              return None
          return self.coordinator.data.update_available
  
      @property
      def extra_state_attributes(self) -> dict | None:
          """Return the optional state attributes."""
          if not self.coordinator.data:
              return None
          data = {}
          if self.coordinator.data.release_notes:
              data[ATTR_RELEASE_NOTES] = self.coordinator.data.release_notes
          if self.coordinator.data.newest_version:
              data[ATTR_NEWEST_VERSION] = self.coordinator.data.newest_version
          return data
  
subject: Add device class update to the updater binary_sensor (#54732)