A2Pico has become a product family :-)
The original A2Pico card has a microSD card slot. But most A2Pico firmwares don't make any use of an SD card. By eliminating the microSD card slot and using a second-generation Raspberry Pi Pico chip, the complexity of the original A2Pico card was significantly reduced.
The result is the new A2Pico2Lite card. At $20, it's even cheaper than the already very affordable A2Pico at $30 (which will continue to be available):
I'm still fully commited to the DIY community. Therefore A2Pico2Lite was very carefully designed to be implementable using the Raspberry Pi Pico 2 module:
Find all relevant info and links on https://github.com/oliverschmidt/a2pico