The new bulb only comes in white – it does n’t do any fancy color temperature adjustments. It offers light equivalent to a 100W bulb, whereas the standard white hue bulb is only a 60W equivalent.
The new A21 bulbs wo n’t replace the existing a19 Hue bulbs, but will be sold alongside them. Like the latest a19 bulbs, the A21 bulbs also include Bluetooth support.
Hue LightStrip plus adds Bluetooth so that it can be controlled without a hue hub. The new model can also be trimmed to size, and the extra pieces can be reattached later with included connectors.