Look at this! Look at this!!
And check this pic out guys !
Looks like its got some sort of modular swappable RX board so you can change or swap what RX-TX you want to use.
Looks like the desinger has future proofed the main gyro and ESC-FET board with a 1 gram plug in modular RX board that plugs in to the top of the (gyro and ESC-FET board)
he could even make a futaba 2.4 module to plug in on top of the gyro and ESC-FET board .