My comment perhaps could've clarified that there was likely some bureaucracy involved in release. I wouldn't even be surprised if my hypothetical Explorer Edition user was a member of the original (or current) Glass team. But likely that it was more of a 20% thing than their job.
But I am dubious this has to do with Glass for Work, because Enterprise Edition has been out a long time, and surely has had updates long before now. It's unlikely that Enterprise Edition is still built on the archaic platform Explorer Edition is built on (Android 4.x on an OMAP processor that was already old when Glass was first released). And there is little to no reason I can fathom for Google to expend Glass for Work resources on backporting fixes to a device that's been abandoned for over three years.
But I am dubious this has to do with Glass for Work, because Enterprise Edition has been out a long time, and surely has had updates long before now. It's unlikely that Enterprise Edition is still built on the archaic platform Explorer Edition is built on (Android 4.x on an OMAP processor that was already old when Glass was first released). And there is little to no reason I can fathom for Google to expend Glass for Work resources on backporting fixes to a device that's been abandoned for over three years.