Well we gleaned a lot of info from the gameplay videos uploaded yesterday. We need to keep in mind that the game they were playing was an unfinished version, and actually from a few months ago if we are to believe one I watched. Much of the information contained in it may have changed or will change in the final game.
Looking at the IMDB page just now, I noticed the last names of characters that were added there yesterday have been removed. Most likely by the Hangar 13 casting director who has been overseeing that page. I have no reason to doubt the names are legitimate, but we need to make sure all these new pages have the unconfirmed template on them.
I guess we could go ahead and make the weapons pages for the ones we know of. On one hand I'm a little hesitant to do so, the names seem oddly generic and may just be placeholders until they come up with permanent ones. On the other hand maybe they just wanted to keep them simple, it's hard to say. It also seems a little odd that the weapons names aren't listed when you access the weapons wheel, I'm guess that's one of those areas that hasn't been finished yet. If we don't make the pages now someone else is likely to do it anyway, so we may as well, and if they change we can rename them.
Looks like we might have enough info to start a gameplay mechanics page and at least add some of the basics. There's also no reason not to make the location pages for what we saw in the videos, we might not be able to get any images until the game is released though.
If anyone knows of anything else, bring it up here.