pihut seem to have stock

Apparently Raspis are back in stock everywhere as announced by Eben Upton earlier this year. Check rpilocator.com

-jw-

Ah, OK, I'm just slow on the uptake! :-)

I've noticed that. I bought my zero W and pico W from them... And a 4 relay hat, which now clicks away nicely under orders from software. I keep think that Bletchley Park would have given their eye teeth for a Pi Zero in WWII.

Pi Zero 2s still seem to be onobtanium in Australia (except in expensive "kits", as usual). One supplier is offering Pi Zero 2 orders for expected delivery in December, but they do have Pi Zeros and Pi 4s available now.

Is the zero 2 simply more ram and a bigger cpu? I've found, not that it is relevant, the original Zero to be more than good enough for my needs :-)

It has a 4-core CPU which can make interactive tasks noticeably quicker - running Pi-Star hotspot in my case. RAM is the same at 512 MB.

Same size RAM, but quad core and 64bit CPU. The CPU clock speed is the same, but being a later version of the architecture it's theoretically a little faster for single-threaded stuff too.

The later arch means that it will run programs in the RPi OS repo where the RPi OS people have secretly used packages from Debian to avoid needing to rebuild them themselves, and those Debian packages aren't compatible with the Pi Zero's CPU (and I'm rather grumpy that they left me to find this out the hard way, rather than documenting what they do).

The Zero 2 uses significantly more power than the Pi Zero or Zero W though.