The lights are on
On the Fallout wiki articles/Fallout forum it states that Area 51 will make an appearance in the game, so we might expect to see something similar to the Mothership Zeta DLC for Fallout 3. Except hopefully they'll make it better. As for hardcore mode, I'm not really excited for that it'll just take away from the experience having to constantly drop ammo, run to find water, or hiding so that my character will finally heal. It's good to see Obsidian go back to their roots and bring back some of the team's original ideas for Fallout 3. Since the game takes place three years after Fallout 3, I'm hoping they'll tie into the lone wanderer's story somehow. Also it's a good thing that now you can't mess up your dialogue by failing a speech check, because that just annoyed me in the last game.
Here's a new source too: