Hearthstone - Goblins vs Gnomes first expansion confirmed - Blizzcon 2014

• Will contain 120 cards.
• Will be launching next month!
• Will be playable for the people at Blizzcon.
• Trailer here.
• Some of the new cards can be seen here and here.
• Spectator mode also confirmed!
• Here's a picture of a new board that will be added.