The new square-shaped Hue bridge adds Apple HomeKit compatibility. Besides HomeKit, the Hue bridge offers all the existing features and compatibility with existing Hue lights, Hue taps, Hue dimmer switches, Hue motion sensor, Philips Hue apps for iOS and Android and the broad range of third party Hue apps.
The new Hue bridge is ready for the future as it has way more internal memory and a more powerful processor than the round-shaped Hue bridge. For more information on HomeKit visit www.meethue.com/apple-homekit.
You can recognize the new Hue bridge by its square shape versus the old round shaped bridge.