The months of subtle hinting and sly dodging are over, the Mythic Map Pack is coming to the Xbox LIVE Marketplace on April 9th, 2009. 

For those who have stumbled into this story completely oblivious, here’s the condensed version of what you can expect to get when you plunk down your hard-earned 800 Microsoft Points in exchange for this trio of maps:

"New spaces, new skulls, and new achievements for Halo 3’s Multiplayer experience. Get tactical in Orbital, compete on the symmetrical Assembly, and construct your own creation with the Forger’s paradise, Sandbox, a blank slate offering players unprecedented levels of customization."