Square Enix has recently released some new images for their upcoming game, Lightning Returns: Final Fantasy XIII. The images give us a view of the Dead Dunes. We can see a Long Gui in the sand, as well as a view of the Sea of Chaos.
It would also seem that inns are making a return in Lightning Returns. When she is low on health, Lightning will be able to buy some potions, eat a meal, or rest at the inn.