No.
You either need to purchase it from the marketplace,
or you can get the mythic disk when you buy Halo 3: ODST.
Mythic map pack mythic mature pack
if you buy the halo wars LCE you get a code for the new mythic map pack on Halo 3
I honestly think you should get both...but if you had to choose one i would say the mythic. Plus legendary might become free soon...
You have to download it over xbox live
There are several map packs. There is the Mythic map pack, Heroic, Legendary, and Mythic part 2. The Heroic map pack is free to download while the other map packs are from 200 ms points - 800. There is also a bonus map called cold storage which is also free! - Henry
its going to come out with halo:ODST
800
Sandbox, Orbital, Assembly, Longshore, Heretic, and Citadel are the maps released in the Mythic Map Pack, and are called the "Mythic Maps" for short.
archon armor
no.
You go to "redeem code"...
they come out with the halo 3 O.D.S.T game