You can see some of the gear and the blocks here. This photo was shot in the new dimension called the dast.
In this boss dungon here you can find the new boss named dragonsteelgolem. This boss has 600 health and does many different strong ranged attacks. This dungon also contains lootchests and a dastmanspawner.
This structure generates in the Spikey Cliffs biome. Untill now it's only decorative.
This huts generate anywhere in the dast (new dimension) in the air. They generate in groups of one or two and they have loot chests in them.
On the left you can see the dragonsteelgolem(which is a boss), right of it is the powerstoneman, in the middle is the powerstonegolem, right of the powerstonegolem is the dastdonkey and on the right is the dastman(you can trade with those).