Well, that didn't take long.
Google's special Glass sales event was officially declared over Tuesday night at 9:23 pm via a blog post that explained all editions have been claimed, and that the company is looking for more ways to expand the Explorer program.
The sell-out culminated a one-day-only sales event in which Google opened up its Explorer program to not just developers and special invitees, but also members of the general public--albeit U.S. residents only. Google hasn't released any sales numbers, so we don't know if the sell-out is a really big deal, or the equivalent of Ferrari selling out a very limited run of rarefied sports cars.
OK, Google Glass is no Ferrari, but the Explorer edition does cost $1500, so a sell-out should mean something. Maybe, possibly. Or perhaps Google was just clearing out the final boxes of inventory before it gears up for some type of new hardware release--perhaps an official introduction of the Titanium Collection, or the true consumer release of Glass, which is still expected this year.
Even more noteworthy was Google's early afternoon blog announcement that it had sold out of the Cotton version of Glass (see photo above). Remember when white Vaurnets where a thing? Is this run on Cotton-themed Glass sort of like that? White, seriously? That color makes a statement.
I chose the shale color when I bought Glass last year. Because in San Francisco, one does not want to call unnecessary attention to one's face computer.