The support was confirmed in IKEA's response to a question posted on its Facebook page this morning, after a customer noticed a change in the technical specifications on the company's Trådfri product page.
According to a thread in the Philips Hue developer support forum, IKEA's smart lighting bulbs are now also compatible with the Philips Hue Bridge, once the products' software has been manually updated.
Existing Trådfri gateway owners need to ensure they have the latest firmware upgrade for their devices to pair them with Amazon Alexa, Apple HomeKit, or Google Home.
IKEA had promised HomeKit support for its affordable range of home lighting products back in May. The system was originally announced in late March, and includes LED bulbs, illuminated panels, a motion sensor kit, a gateway kit, and dimming lights.
Update: Sadly, it looks as if IKEA's confirmation of Trådfri HomeKit support earlier today was in error. IKEA has since made the following statement on its Swedish Facebook page:
There has been information going out today about the compatibility of TRÅDFRI. We can now inform you that TRÅDFRI is not yet compatible with Apple, Amazon and Google. The plan is that everything will work as we'd like this fall. We are very sorry for the confusion!Note: This does not apply to the Philips Hue Bridge compatibility, as reported from the separate source above.