2K Games have announced that Sid Meier's Civilization V will be available in the UK on 24th September, whereas in the US it will be available on the 21st.
The game promises to take the series and indeed the turn-based strategy genre to a new direction with a new engine built from the ground-up and the introduction of hexagon tiles, a first for the series.
More details about the game, screenshots and videos can be found on the Civ V GamePage.