Fallout: New Vegas

On Monday at a Bethesda Press Conference,

The new game was revealed by Bethesda's Pete Hines who said that the publisher is working with Obsidian Entertainment on the title. It's not a sequel to Fallout 3, merely another game in the Fallout universe. The game will be in the style of the third game rather than the first 2.

Sounding good, seems like it could be set in a rebuilt Las Vegas, or somewhere completely different, but more fallout 3 can't be a bad thing right? Also it should be noted the creators of Fallout 3 said the thing they learnt for making the next game is 'make sure it doesn't end.'. That can only be good.