The map itself is called Foundry and as one might expect it takes place in an old iron works factory. The two new weapons are an AK-47 machine gun and (as shown above) a Japanese Katana sword. Tripwire also announced plans for a paid DLC download for the game that will add four new playable characters. So far there's no word on when either downloads will be released nor what the price will be for the paid DLC expansion.
Gallery: Killing Floor