It was actually launched in Jan 2023. It's been mostly out of stock, but a bare module with 4mb spi flash is in stock right now. However, currently populated dev boards are overpriced.

https://www.adafruit.com/product/5670

edit: I'd wait to buy it regardless, software and sdk is still under active development.

https://github.com/espressif/esp-idf/issues/10423 https://www.reddit.com/r/esp32/comments/10pkuin/esp32c6_real...