Eh, I think the StuG is fair game now that it's changes have been made public. People haven't seen it in action yet, but it's not much different from the old StuG, so people can imagine what it's gonna be like.
It's no joke. After the ludicrous Tiger Ace debacle, I made an admittedly ill advised post about how the TA had gone through very little testing and the testers opinions didn't matter anyway because they told us that the changes for the TA were set in stone already. I was promptly banned (naturally) for breaking NDA (no surprises there) and lying about a developer (which was getting into KGB/NKVD levels of thinking).
Especially in the terms they couched it in in the message they sent me, what they said was no joke, paper tiger or no.
So keep clear of screwing with the NDA. Since I'm not bound by the NDA these days I don't care what I say, but still, be careful about what you say about things that happened during the alpha.