Well spotted, everything. Also based on picture #1 it's still possible to build at least roads outside your borders, of course there is then settler/worker units, too.
Graphics could be better. I don't mind these dark landscapes, they fit fairly well, but water should be brighter blue. And the "improved" city graphics in pic 1 make it look like ruins, not to mention irrigation that looks like swamp.
The special grassland squares with bonus resource shield are still there, but they don't anymore form a predictable pattern. Same goes for real special resources. Maybe they can be placed freely in map editor?
There seems to be forests over different kinds of terrains (grasslands, plains, tundra). Maybe we'll see terrain combinations in the game?
OK, enough fo that pic. Other pictures aren't as interesting, though city view really looks cool.