NDA aside, I do believe that as Beta goes on, Sigil will be slowly releasing a lot of information regarding everything, fighters included.
There will be new info, it just won't come from the testers.
I've had two people on the OVF pm me and accuse me of breaching the NDA re: some of my posts...I'm not sure how that could happen since I didn't even know about Fanguard until I registered in May/June...but it's definitely something you don't want on your record, that's for sure.
I respect VF's strict enforcement of the NDA here, as should every site out there. Who knows if there are less scrupulous players out there though? We'll have to wait and see. I plan on doing as much up to date writing as I can, and if I get into Beta I won't cease to blurb, I will just remain strictly blurbing from Sigil released materials.
Rules are fun!
-Eclipse