Caesar's Legion (slavers from the east) vs.
* The storyline is focused on the New California Republic vs. * Normal mode is more similar to Fallout 3 gameplay. * There is an optional hardcore mode, the character needs to drink water, ammo has weight, healing isn't instant etc.
The ever vigilant Ausir has of course listed all features that have been mentioned. Apparently, a number of people have received their copies of PC gamer, which includes a feature on Fallout: New Vegas.