Bungie from very beginning intended to bring new multiplayer map pack to Xbox360 gamers, which was in the pipeline since November 2006, is finally available for download. Microsoft, the game publisher cautions that it won't be easy to get the new content downloaded on your console because it was originally made for Xbox.

There are two maps available through the Halo II interface for $4 (won't be downloadable through Marketplace). This is obvious that you will need a credit card to purchase the maps as the Points system is not in effect. If you haven't a credit card, Bungie suggests an alternative; Head down to your local Visa gift card retailer and charge one up with just enough to cover the purchase.
The maps are original Xbox content, so when you purchase them, they are tied the console they are purchased on. You cannot go to another box and re-download them free.

The new matchmaking playlist has now been updated to the following, which will take place within a week:
Rumble Pit - Unranked - FFA (New Maps Required)
Double Team - Ranked - 2v2 Teams
Team Slayer - Ranked - 3/4 vs. 3/4 (New Maps Required)
Team Skirmish - Ranked - 3/4 vs. 3/4 - (New Maps Required)
Team Training - Unranked - 3/4 vs. 3/4
Team Snipers - Ranked - 3/4 vs. 3/4 (New Maps Required)
Team Hardcore - Ranked - 3/4 vs. 3/4
Team SWAT - Unranked - 3/4 vs. 3/4 (New Maps Required)
Big Team Battle - Unranked - 5/6 vs. 5/6
More here
Via: gamingnexus