The first downloadable Halo 3 map pack that we first learned about a few months ago has been released today as promised. Called the Heroic Map Pack, it contains three new maps and is available in all Xbox LIVE regions except India for 800 Microsoft Points.

Here’s the Dashboard description: The Heroic map pack contains three new maps, each presenting a totally different play style. Standoff’s symmetrical valley, with its entrenched bases and fields of boulders is ideal for mid-sized objective and Slayer game types, while Rat’s Nest’s vast, labyrinthine passages bring something quite new to the Halo multiplayer experience – an indoor vehicle paradise, strongly influenced by the Campaign mode ideal for big team battles. Finally, Foundry is the ultimate Forge map – players can edit every single object in this voluminous industrial warehouse, place stairways, walls, bridges and tunnels to create an entirely new play space and build almost any kind of map they can think of.

A bunch of new screenshots from the DLC have been added to our Halo3 gallery as well, so definitely go check them out if you haven’t laid eyes on these new maps yet.