PC Gamer's latest New Vegas hands-on tells of a game that "looks like a fuller, funner Fallout" where "new quests crop up with happy regularity". And there are the main factions:<blockquote>It’s here that New Vegas’ new currencies become important. The game’s two confirmed factions – the slave-taking Caesar’s Legion and the New California Rangers – have their own money in addition to Fallout 3’s bottlecaps. We’ve seen these factions before: both are interwoven into Fallout mythology. Caesar’s Legion like to dress in leather skirts and sport fetching centurion-style brushes on their helmets. I’d advise against admiring their sartorial choice though: they’re a slaving faction, and friendly dalliances with their leaders will undoubtedly make your reputation plumb new depths.</blockquote>Yes who can even wait to meet up with the Caesar's Legion of old. The preview also describes a Novac quest that you can check out if you have no fear of spoilers.