Speaking with Jeff Gardiner, who has been at the helm of the "Fallout 3" DLC content, I was curious what sort of weapons we'd be seeing in Mothership Zeta, the upcoming alien-centric expansion. Thankfully it looks like there is plenty to keep our trigger fingers humming:
"Mothership Zeta is full of the most high tech weaponry in the game. It includes a Shock Baton for melee fighters, multiple new firearms including an Alien Atomizer, a pistol, and the Alien Disintegrator, a new rifle. There's also a new grenade type, a Cryo Grenade, which freezes enemies for a short period of time. On top of that there are new unique weapons, and a new heavy weapon."
Gardiner continued, saying that there will also be a new perk to unlock, called "Xenotech Expert."
"It increases the damage you do with alien weapons, including the Alien Blaster if the player had found that in the wasteland."
The perk will be mission-specific, though, since this DLC (along with all forthcoming DLC packs) doesn't increase the level cap.
Once you've finished with the Mothership main quest, you'll still be able to return to the alien ship. There's definitely a reason to journey back, as the ship houses an item called "Alien Epoxy" which can automatically repair an item by 25%, even if you don't have a duplicate. Great news for all the Gauss Rifle fans who have only been able to repair it to 50% with vendors.