[RyanCahoon]

To back this up, Update 4 gave the following clarification:

<R67> All outputs from sensors, custom circuits and additional electronics shall connect
to only the following:
A. Other custom circuits, or
B. PWM Out, I2C, Relay or Digital I/O ports on the Digital Sidecar, or
C. ANALOG IN ports on the Analog Breakout.
D. Ethernet Port 2 on the cRIO Mobile Device Controller (to which the Kit Of
Parts-provided camera, and only that camera, may be connected).

So whatever additional cameras you may wish to add can only be connected through the Digital and Analog Inputs, or the I2C interface.

--Ryan