According to this site , a new line of LEGO board games will debut in August. Game materials, including dice, will be constructed using familiar LEGO bricks:
"Both the board and dice are ‘built’ in the traditional LEGO way with the game concept constructed and enacted as an extension of the Lego build experience. Each game can be redesigned and reconstructed. Games can be adapted, using Lego elements to enhance and evolve the game play. "
Little detailed information is available right now, but it's rumored that the games will be unveiled at the 60th International Toy Fair Nuremberg in February.