March 31st for 800 or 1000 microsoft points but only the first 3 maps (Assembly, Orbital, Sandbox) people who have them now got the Halo Wars Limited Edition

There is a big rumor its coming out next weekend so get ready for sandbox!!

The mythic maps (Orbital,Assembly,and sandbox) have already came out if you pre-ordered Halo Wars
The other 3 (Heretic,Longshore,and Citadel) Come out with The Game Halo:ODST in september 15 2009
I hoped this helped : )
they will be in market place in april

It’s coming this spring. If you can wait, it will come very fast. It’s either coming this month or in a few months.

sometime in october

October 21st or 28th are the highest possible release dates so far.

It’s already out. You can get it by buying a copy of the limited edition of Halo Wars.
Check out this link!
You can get all kinds of free stuff, from videogames, to clothes, to books! It isn’t a scam, I swear!

it just came out.go buy halo wars limeted edition and you will get the map pack with it.it has the code for it.go to your nearest game store and ask about it!i hope this will help.have a nice day!

There were a total of 6 maps in the mythic mappack. 3 have been released in the Limited Edition version of Halo Wars, but the other three are to be shipped with the game “Halo 3: Recon”. The three that come with halo wars are Sandbox, Orbital, and Assembly. Longshore, Heretic and Citadel will not be included. The Mythic Map Pack’s release date on the XBL Marketplace is unconfirmed, though many dates have been predicted including, March 7th, 10th, and 31st, according to supposed leaked Microsoft support calls. Hopefully we can expect these maps in late March or early April. Unfortunately, for the moment, they are only shipped with Limited Edition Halo Wars.

I reckon it’s going to be in december… Basically if you want a preview you can get 3 mythic maps by getting the collectible halo wars