I know they give you Mark V Alpha, and two “Premium” packs a week.
What day of the week do you get them? Do you always get two at once? Is the content completely pre-determined beyond Chief’s original armor?
If they’re anything like the Warzone REQ pack, we’ll get them on Mondays. But we can’t say for sure yet, since it only came out this week. Yes, you only get two at once, two per week for 7 weeks. And no, the content is completely randomized like any other REQ pack, but you have higher odds of getting Ultra Rares and Legendaries.