Yes, the MYC-SAM9X5 series CPU modules are using one common base board to provide five development boards for evaluating the five Atmel processors:

MYD-SAM9G15 development board (based on Atmel AT91SAM9G15) using MYC-SAM9G15 as CPU Module

MYD-SAM9G25 development board (based on Atmel AT91SAM9G25) using MYC-SAM9G25 as CPU Module

MYD-SAM9G35 development board (based on Atmel AT91SAM9G35) using MYC-SAM9G35 as CPU Module

MYD-SAM9X25 development board (based on Atmel AT91SAM9X25) using MYC-SAM9X25 as CPU Module

MYD-SAM9X35 development board (based on Atmel AT91SAM9X35) using MYC-SAM9X35 as CPU Module