I think I tend to skim through terms of service/user agreements/etc. more thoroughly than a lot of people, but I don't recall seeing anything. Given that these forums seem to be open to the public, I assume we're able to publicize information about the game in its beta state, but I just want to be sure there's not a nondisclosure agreement I missed somewhere.
There wasn't an NDA when I signed up and given the amount of videos etc., posted up 'til now, I doubt there will be.