For sale is 1pcs of the new ESP32 S-2 development board, it has a very similar form factor to the D1 mini, it has been advertised as a replacement to it but i have not personally confirmed this. its important to note that this board has double rows of pins while the original 8266 based D1 mini had only single rows.

Chipset is the newer 2nd generation ESP32 S-2
FLASH 4MB
PSRAM 2MB
Interface: USB-C