Legacy rewards in Infinite?

I know there’s a reward for reaching a certain level in Halo 5 but I saw on Twitter there’s rewards you can earn from MCC? Anybody know way the rewards are and how to earn them or if there even are any?

Maybe, although I think 343 are being quite generous enough as it is with the battle pass system they’re doing (The none expiring battle passes which you can take your time with) but I suppose it’d be interesting to see if they decided to do it.