It's a good question. I intend to respect the NDA. Once in Beta anyone is then posting from a position of experience rather than speculation fueled by whatever information can be gleaned from other sources.
That said, depending on what is actually in the NDA when we read it, should one be careful with ones language and continue to post as if we're just speculating what the game will be like at launch....
....hmm, will see. But can still post about other stuff, in the off topic boards as well.