Nope, they're purely imaginary, including the one attached to the back of my TV.
The story, somewhere else on this forum (sorry, don't recall exactly where) is that:
- Pi Zero production got (partially?) bumped out of the way to make production room for the Pi 3,
- Conditions have improved and the Pi Zero is going (has gone?) back into production,
- Sony (one? of the manufacturers) has improved automated testing so they can make them faster.
In summary, we should be seeing lots more soon. It has been said before that the the RPF are initally distributing to only a fixed small set of websites. Some others may have it listed, but only speculatively - they may say "backordered" but they won't get any stock until the RPF makes it available beyond that initial set of websites. In the meantime, the website http://whereismypizero.com
shows a nice quick summary of stock status at the websites that are
getting stock (it's how I grabbed mine, some weeks back).
Be aware that many of the Pi Zeroes getting sold through these sites are packaged (by the sellers) as part of "starter kits". The prospect of getting a Pi for $5 is really cool, but you need a handful of bits to get it running anyway, and if they sold just the Pi Zero for $5 (plus shipping), there wouldn't be much profit. Eh, I'd call it non-optimal but understandable. I got the "Pi Zero Budget Pack" from Adafruit for $25, and I'm using the power adapter, MicroSD card and mini-HDMI adapter from the kit (also used the MicroUSB adapter cable initially, but have now switched to a "Plugable OTG Micro-B to Ethernet Adapter", which precisely fits my needs), and the extra bits were not priced unreasonably, so I'm not unhappy. Just be aware that this kind of thing is what you're likely to find.
Still waiting for their ubiquitous availability, so folks can start populating USB hubs with them, making tiny "compute clusters".