There is a focus on Transport through the trailer: footstep on desert, then on camels, then jumping horses, then embarkation, then sailing ship, then train, then asphalt road in city, then space. Civilization VII's logo is crossing an hexagone with diverging paths. I wonder if it means a huge change on the movement system.
The hexagone could also stand for a 3D box too. The map could change from being one board (or a Cylinder) that leaves the North and South pole with long edge, it could be 6 joint boards (or a Cube) that could emulate a somewhat round map? The seamless transitions between each focus could be a hint for that.
There is also a focus on 7, from the Z. It could mean having only 7 eras (no Atomic or Future era), having 7 victory conditions (let's hope Religious is none of those), and more.
My bets:
- Rework on the movement system with inland navigable rivers (deep/shallow river), enhancement of Engineering projects (canal, tunnel, railroad, polderization...), and more interesting navigation through the eras? Tiles themselves could be more fluid (being half water and land) and dynamic (wood growth, desert expansion...).
- More victory conditions, with 7 in total. Tourism and Space Race is roughly the same. Diplomatic is fixed. Domination split between Hegemony (more population/territory) and Conquest (being Liege of everyone). Introduction of Economical victory. Score victory is refined. No Religious Victory anymore.
- Changes for the era system, with 7 in total. Probably the removal of Atomic and Future eras. Perhaps the abandon of a rigid Tree system for more a la carte one?
- World is now a Cube instead of a Cylinder, meaning no edge of the world anymore.