Fab on SEN-10736 - 9 Degrees of Freedom - Razor IMU

Hi,
I’ve been using the Razor IMU as a wireless sensor with xbee modules… I’d like to have a dual communication (serial and xbee) for tests, but I don’t know if digital pins are available for this (I use Digital Pins 0 & 1 for wireless communication).
Can I use some of the the 2x3 headers for this? (I read these were for ISP, but who knows!)
More generally speaking, it would be useful to find on your website drawings explaining headers connexions (your “Schematic” file doesn’t give a clue!)
By the way, I hope the new release will include additional I/O pins!
Fab