Strategic resources

[Sabre2th]

One unit per resource, strictly? I'm guessing this means that the strategic resources are widely available, not rare, as in past civ games. So...much more than two or three resources on a standard-sized continent.

Unless there's a ratio...for example, three units per resource on a standard-sized map?

Yes. One or more of the previews said that you get something like 2-4 'irons' per resource on the map.

[Japher]

Bronze is gone... shouldn't Ivory be required for any Elephant units? What about Stone and Marble for wonders?

This makes baby Jesus cry.

Baby Jesus tears are used for holy handgrenadiers