Details are scarce, but Snap just went public, and they plan to "significantly broaden the distribution of Spectacles." So expect them to start popping up in more tech retailers and likely online as well. The company wants to sink more money into marketing and distribution. Spectacles haven't yet earned "significant revenue," but that's to be expected with the limited roll out. The potential definitely seems to be there.
This could be exactly what Snapchat needs now that Facebook is trying to compete with them directly through the new filters on their Messenger camera. Snap finally put on its big boy pants by going public and they're ready to take over their world, whatever weird, niche-y world that happens to be.