We do know, however, that City States will present a new diplomatic battleground, and that you will continue to manage relationships with other leaders by bribing them, trading and kicking their heads off.
When all else fails war will take place on "vast, realistic and diverse landscapes", and this time you will be able to fall back on ranged bombardment, too, loosing off rounds from behind the front lines. Perhaps adopting from the BAFTA-winning successes of Civilization Revolution on consoles, the developer is also promising a more intuitive interface suitable for veterans and newcomers alike, with a range of "trusted advisers" to walk you through things if you get stuck. Interestingly, Firaxis also mentions "new ways to play and win, new tools to manage and expand your civilization, extensive modding capabilities, and intensely competitive multiplayer".
Modders and multiplayer fans will be able to take advantage of an in-game community hub for playing via internet or email, and for sharing scenarios, comparing scores and achievements and accessing fan-sites.
Unlike a lot of modern PC games, Civ V also promises LAN and hotseat multiplayer support, so you really can fill your boots.