Sadly the cRio will be Windows only based on what an NI employee said at one of the sessions. Windriver (I think) is only a windows app and their license won't let them port to OS X. However this is only true for sending to the robot. So using a different OS for debugging and stuff is an option.
<conjecture>Also, my hunch is that the Windows thing only applies if you use their libraries. It is possible to program the robot using currently existing tools so we might be able to, with some extra work, do most everything on a Mac. I would appreciate if someone more familar with NI could comment on this thought. </conjecture>
Also for anyone who missed the championships and wants to see some info about the new controller the link to the NI community is
http://decibel.ni.com/content/community/first.
Also, who thinks it would be a good idea if NI released pre-release libraries so that teams could get their feet wet over the summer? This is a massive change for everyone involved. The controller is bigger and heavier (2.5 lbs w/o modules) And the wiring to and from it will be different. Perhaps FRC should allow us to get our hands on stuff ahead of time to help us overcome some of these obstacles.