Was it announced whether we'd be stripped of our weapons when we enter into the DLC?
And if so do we know if we get all our stuff back?
It certainly appears that way from the trailer, I would think the absolute best thing to do would be get rid of your companions and take with you only an ok set of armor, a weapon or two you don't mind parting with, and minimal aid (really just enough to get to the start point). The other thing this does is frees up your inventory anyway. I did this for Mothership Zeta in FO3, thinking I was going to lose everything forever anyway... ended up with so many Alien weapons, I just looted that ship for everything it was worth. I had like 15-20 of those Alien Rifles and the Alien Pistol things, all in excellent condition.