CS: Go information:
-There are several new weapons.
-Submachine guns are more powerful.
-Pistols have had a damage reduction, specifically the default pistols.
-Armor costs money in Competitive mode, while it is free in Casual mode.
-The defusal kit is no longer buyable. It is randomly given...
http://cdn2.netops.eidosinteractive.com/files/deusex/BdW9RxMRr/13311tower.wav
I did some sleuthing and found this is the websites source code.
So it looks like the ship scenario is quite likely.
http://www.joystiq.com/2011/08/31/deus-ex-human-revolution-conspiracy-hints-at-new-content/
So Eidos has had a viral marketing campaign going on that will lead to a DLC announcement.
http://www.13311tower.com/
This website supposedly has a few clues
BSAX081-C :Geneva? --Probably referring...
Assassin's Creed Brotherhood
Bayonetta
Deus Ex
Deus Ex: Invisible War
Duke Nukem 3D
Duke Nukem Manhattan Project
The Legend of Zelda: Twilight Princess
Aliens Vs Predator
Mortal Kombat
Crysis 2
Duke Nukem Forever
Serious Sam HD: The Second Encounter
Portal 2
Batman: Arkham Asylum
Dead Rising 2...
http://kotaku.com/5835392/it-sounds-like-the-next-duke-nukem-game-will-be-better-and-will-be-revealed-soon
Gearbox will officially unveil their homegrown Duke game soon. Really looking forward to it. ANYTHING to wash the taste of DNF away.