The S3 is not out yet, not even close. My FeatherS2 has 16MB of flash and 8MB of PSRAM, and that has native USB. My TinyS2 has 4MB Flash and 2MB PSRAM and native USB and is the TinyPICO form factor. The ESP32-S3 for a "TinyPICO" form factor board will never come with more than 4MB of internal flash and external flash wont fit on a TinyPICO sized board.

I'll have a FeatherS3 and ProS3 out as soon as he ESP32-S3 is released.

https://feathers2.io

https://tinys2.io