possibly for gamma.
has there ever been a question about that? I mean, there was a time we didn't know about the alpha (its a new thing after all) but I've never heard any possibility of the gamma *not* having an NDA.
the gamma has always had an NDA to my knowledge, and I recall discussions about how there has to be an NDA for the gamma so that there can be 'exclusive' bits for magizines and websites to post. Without that, the media won't be excited to write articles and no publicity.
I'm under the impression that NDAs are going to be mailed out prior to thursday so that the lucky ~100 can start playing on thursday. There has been a bit of "wait until thursday" on the chat, which suggests to me that it is confirmed on thursday there will be playing to be had. Also, its kinda confirmed that the build for the alpha is going to be up this week, and Stardock doesn't like to release on Friday because they don't like to leave people hanging over the weekend before getting support. It could be different for the alpha, since its a select 100, not the whole community, but still.