I was at PAX east and waited in line for an hour and a half to play SW2 before getting pulled away to meet up with a friend. I was maybe another 10-20 minutes from actually playing, so the regret is real.
I didn't see anyone post anything from the booth so here's a couple pictures I took
http://imgur.com/a/W7RP8
They were giving out a
ton of those fortune cookies, and waiting in line as I was,
I had a bunch of them. Aside from that they were giving out
wrist-bands, as well as slips of paper with Steam codes for both Shadow Warrior 2013 and Bro-Force. So that was pretty cool.
The highlight for me was that I got to talk to one of the guys at the booth, and asked him if he knew what the deal was with Duke Megaton Edition. He told me he wasn't really sure, but explained the basics of the Gearbox/3DR situation and described 'those new 3D Realms guys' as 'pretty squirrely'.