Thank you George..... As far as I can judge on the pictures and the pins file for Fystec S6 V2.0
- Some pins have been reassigned for TMC UART and SPI TMC2130
- There seems to be power options by jumpers (powering by USB??) but I might be wrong about this.
- Boot0 button is removed - V2.0 describes now updating firmware by SD card. V1.2 in DFU mode by STM link which can be nasty when the board is installed in a 3D printer.
- external EEPROM standard in V2.0. My S6 V1.2 does have external I2C Eeprom (24LC16 16kbit/2kbyte) but it seems the first iterations of the S6 V1.2 do not have any external EEPROM installed.
I will wait for the news :-)