Machines that Go Bing! -- The Gadgets Blog

The pack includes three maps which are highly customizable:

Standoff’s symmetrical valley: entrenched bases and fields of boulders — ideal for mid-sized objective and Slayer game types.
Rat’s Nest: Vast, labyrinthine passages and an indoor vehicle paradise, strongly influenced by the Campaign mode, ideal for big team battles.
Foundry: The ultimate Forge map — players can edit every [...]

Halo 3 probably deserves to be reembered as one of the most hyped games of the decade and this Tuesday millions of gamers will find out whether the hype was justified.
They probably won’t be disappointed.