This small, robust and powerful board follows classic Nano footprint and pinout but it actually have 4 more pins.
Based on the ATMega4808 AVR processor, same family as Arduino Every (which have 4809).
Main difference between those two is lower number of legs, which actually makes sense considering footprint of Nano.
This is board is a more or less equivalent of genuine Arduino Every, calling it it's clone would be misleading.
It's good candidate to have some fun with low level hardcore hacking.
Here is thread from AVRFreaks regarding it introduction: https://www.avrfreaks.net/forum/nano-every-use-atmega4808
and here is software core https://github.com/Thinary/ThinaryArduino (https://github.com/Thinary/ThinaryArduino/tree/master/Thinary-megaavr)
Oh, and it comes in cute plastic pillbox.