The Gearbox forums have announced the inevitability of the Icons Parody Pack, a multiplayer add-on for Duke Nukem Forever. It'll contain new maps and game modes, and be available in the autumn at some point. The post explains that the DLC will be free "to all First Access Club members who registered their FAC membership before Duke Nukem Forever launched in their country (subject to availability)." Presumably everyone else will have an option to buy it. More details below.
Three All-New Modes – Freeze Tag provides some of the most fun team gameplay in Duke Nukem Forever. Players cooperate to freeze and shatter their opponents in succession for huge point streaks and combos. See who can hold on to the babe the longest in Hot Potato and play free-for-all Duke style in Hail to the King.
Call of Duke – Duke engages in modern combat in a war-torn city. Foes don’t stand a chance against the Duke when he spams the map with the N00b T00b.
Sandbox – Players take the role of mini-Duke in a giant sandbox with two bases at either end made out of children’s toys. This map features Sticky Bombs.
Inferno – Time machine engage! Duke does combat in a hellish landscape of lava and teleporters. Who turned on the 16-bit graphics, and more importantly, where did this
DFG come from?
2Forts1Bridge – Hats? Duke doesn’t need no stinking hats. Give him a minigun and he’ll beat off all comers.
"Beat off all comers."