Dominion: Hinterlands (Second Edition) contains nine new types of Kingdom cards, which will be released on their own as an update pack for those who own the first edition of this expansion.
The new cards: Berserker, Cauldron, Guard Dog, Nomads, Souk, Trail, Weaver, Wheelwright, Witch's Hut
The following cards included in the first edition should be removed when using the Hinterlands second edition Update Pack:
Cache, Duchess, Embassy, Ill-Gotten Gains, Mandarin, Noble Brigand, Nomad Camp, Oracle, Silk Road
This is an expansion - a base game of Dominion and first edition Hinterlands expansion are required to play