New FTC controller info from FIRST announcement/blog:
. LEGO NXT controller w/55mhz ARM processor for user code
. HiTechnic
I2C sMUX sensor multiplexor for expanding number of sensors.
. NXTG, LabVIEW, RobotC programming tools
. 2-way bluetooth communication
There are I2C prototype cards for developing your own sensors, but latency looks like it might be an issue for some sensors that need fine timing control - maybe not - but that is my first impression. The prototype card uses a pre-programmed PIC16LF819.
BTW, the hardware devo kit for CompactRIO which includes processor module and a couple io modules is $5000. Just the real-time controller module is $1500 list.