Discoussion on RCGroups: Link
Dimension: 35x35mm
Mounting holes: 30x30mm
MCU: STM32F405RG
IMU: MPU6050A (SPI) with Interrupt (this is the new name of ICM-20689)
Baro: BMP280 via I2C
VCP: yes
OSD: BFOSD
Hardware ISP: 3
Hardware uarts: 3
Blackbox: MicroSD socket
PPM/UART share: UART2
Frsky/Smartport: UART3
Voltage sensor: on board voltage divider
Transponder/led-strip share: yes
Bottons: 1-dfu
Status leds: 1