Add this one to the "Finally." category.
Belkin announced today that a new Wemo bridge is coming to bring HomeKit compatibility to Wemo smart plugs and light switches. Home Kit compatibility has been one of Belkin's most requested features and was originally mentioned over a year ago but put on the back burner.
The HomeKit bridge is a hardware accessory that connects to the home's network via an Ethernet cable. Unfortunately, there are still many unanswered questions in the somewhat vague press release. The bridge is said to release "late this Fall" with pricing to be announced. It is also unknown exactly which products the bridge will work with.
I've had somewhat hit and miss luck with the Wemo line of products. Currently, I have several older Wemo switches (now replaced by the Mini Smart plug) that I use with the Wemo App, Alexa and IFTTT. It's uncertain whether the HomeKit Bridge will support older switches.
We're making progress, but it still feels like very early days for home automation.