This has been posted about a few times before:
I'm not sure I really see it as a loss for Z-Wave (or maybe even a win for anybody, except maybe Apple will now actually have devices that work with HomeKit if they can agree on a way to communicate regardless of the specific device--like many of us are faking with HomeBridge). I'm not even sure like it looks like a "win" for Zigbee, either--the Alliance is obviously involved, but I'm not sure it extends to Zigbee itself as a protocol, possibly just another standard (cue obligatory xkcd) that could ride on top. The desired end result isn't really clear to me.
