Earlier this week Microsoft confirmed that Halo 5: Guardians, the latest entry to the main line of Halo games, would be receiving an update to run at 4K on the upcoming Xbox One X console. Alongside this announcement, it was also unveiled that Halo 3, Halo 3: ODST, Halo CE: Anniversary and Halo 4 would soon be playable on Xbox One, via the backward compatibility program. All Xbox 360 DLC packs related to the Halo franchise would also be made available for free, to celebrate the arrival on Xbox One.

While the backward compatible versions of the aforementioned games are still a while off, it already appears that the Halo expansion packs are free to download via the Xbox Store. Content for Halo 3, Halo 4, Halo: Reach and Halo Wars is now accessible, including map packs and cosmetic bundles. Here's a breakdown of the content for these Xbox 360 titles.

Updated July 7, 2017: It appears that one of the Halo: Reach map packs, the Noble Map Pack, still appears to be paid. Assuming this is a temporary error, we'll update this post once the pack is free.

It should also be noted that both Halo: Reach and Halo Wars are already backward compatible, allowing Xbox One owners to jump into the action today. Other Halo titles are set to join the program "later this year," assumedly closer to the 4K patch for Xbox One X owners.

Will you be playing the older Halo titles on Xbox One? Let us know which games you're looking forward to in the comments.