Same question, it's been years since this has been published, for YEARS it seems those "members" just does not have that much interest into the Ant+ lights, and very few product has been made to the market.
Since the big brands are so busy with their other BIG businesses, time for making this available to all the others? Let the other adopters who have more motivations to make the Ant+ bike lights. At such speed, this market cannot boom.
From any view, a market full of Ant+ capable bike lights is far better than a market where most people don't even know it. 4 years it's a long time, it's time to make it available now.