So, I couldn't resist, and I looked at those images 343i posted on waypoint.
While I love the new Honour Guard, I can't really understand why they made the ODSTs like that, with no armour except the shoulder plates. Did they want to keep them as they were represented in Halo 2? Or is it a new design for future gam- oh wait, how silly! There are no ODSTs in Halo anymore, so why should I bother?
Anyway, what really caught my attention is this image:
Is this a Halo 5 concept art? Because Chief is wearing that armour and honestly, it's quite detailed; hence, if it was a MCC concept art, why would they have bothered drawing that armour?
Besides, I can't remember if I've ever seen that structure in the past. Could it be Multiplayer related? But I don't think it was in it either.