Information:
http://www.civilization5.com/bravenewworld/
http://www.rockpapershotgun.com/2013...world-preview/
http://www.pcgamer.com/2013/03/15/ci...and-diplomacy/
Anyone else looking forward to picking this up? I'm happy to see that they're reworking the culture victory, changing it into a way that makes more sense then just completing 5 policy trees. The archaeology system sounds interesting as well, encouraging exploration in the later game rather than just uncovering tiles and being done with it.
The World Congress system sounds like a cross between the Planetary Council from SMAC/the UN from Civ 4, with you needing to meet all the other civilizations first etc before you can vote. They mentioned that they've changed the lead-in to the diplomatic win, hoping they have changed it so it's no longer a "buy city states at last moment and win" method.
New civilizations - the only one we know of so far is Poland, whose UA is a free social policy each time they advance an era. With one of the scenarios being set in Africa, I think it's a safe bet to assume Zulus will be in, and I would be surprised if Portugal isn't included either (with the changed trade route system, exploration being a factor etc.)
There are other new features as well such as a new trade route mechanic, tourism, ideologies etc. It's due to be released this summer, hoping it will be a June release like G&K was.