Pi Zero: Nov 2015 (1x ARM1176JZF-S @ 1 GHz, 512 MB RAM)
Pi Zero 1.3: May 2016 (now you can use cameras)
Pi Zero W: Feb 2017 (Wifi and bluetooth 4.1)
Pi Zero WH: Jan 2018 (omg, soldering the gpio pins? Much wow)
Pi Zero 2 W: Oct 2021 (4x ARM Cortex-A53 @ 1Ghz, still 512 MB, now bluetooth 4.2)
I'm not at all convinced they are caring about this market. Realistically there have only been 3 models and there really hasn't been much push into this area. The Zero 2 upgrade wasn't anywhere near the leap that the normal pis are making. I know there is more limitations, but they also have more competitors and it isn't like the zeros are sitting on shelves. There's till a good market for <$20 computers (and especially for a $5 one)
For more context:
Raspberry pi: April 2014
Pi Zero: Nov 2015 (1x ARM1176JZF-S @ 1 GHz, 512 MB RAM)
Pi Zero 1.3: May 2016 (now you can use cameras)
Pi Zero W: Feb 2017 (Wifi and bluetooth 4.1)
Pi Zero WH: Jan 2018 (omg, soldering the gpio pins? Much wow)
Pi Zero 2 W: Oct 2021 (4x ARM Cortex-A53 @ 1Ghz, still 512 MB, now bluetooth 4.2)
I'm not at all convinced they are caring about this market. Realistically there have only been 3 models and there really hasn't been much push into this area. The Zero 2 upgrade wasn't anywhere near the leap that the normal pis are making. I know there is more limitations, but they also have more competitors and it isn't like the zeros are sitting on shelves. There's till a good market for <$20 computers (and especially for a $5 one)