The final cut of the 9th episode of the Tesla Motors Club Podcast, featuring Chad Schwitters, the former president of Plug In America, is now available. You can watch it now on YouTube or listen to it on all major podcast networks.
The link you provided gave me a 404, and when I clicked on the "charging" link at the top of the page I don't see a J1772 wall connector available. The only J1772 item I see is the J1772 adapter for $50.
No one knows; I believe that Tesla found some old inventory (this unit was a Gen2 Wall Connector with J1772 charging connector) and decided to sell off this old inventory. I doubt this item will return, at least not in the Gen2 form.