A new Dark Sun adventure, for characters 8-10th level, appears in Dungeon magazine:
The adventurers must find a suitable place to plant a precious seed of life that the party has previously acquired. They travel to a remote island in the Sea of Silt to plant the seed far from the influence of the sorcerer-kings. Once on the island, they find that it is not as uninhabited as they had been led to believe.
Get it here