Risk 2008 rules update.
The game board consists of the standard six zones and 42 territories, along with an Outer Haven battleship addition. There are also 275 custom plastic pieces representing the five PMCs, neutral armies and cities; 8 Boss Cards, 40 Drebin's Cards, 42 Territory Cards and 8 Rewards that can be earned.
The board game will be available exclusively through USAopoly.com, beginning "presale" on October 3 for $50. No official launch date has been given. In the meantime, you can always play Risk: Halo Wars.