It is widley accepted that the flying orb from the H4 trailers is a cryptum. Then what does This concept art repesent? It does not appear to be a cryptum.
a Sabre-like Forerunner space ship.
Something new that isn’t a Cryptum?
> Something new that isn’t a Cryptum?
You know what? You might be onto something? LOL
Probably some kind of fighter. looks like it could have been the inspiration to the Covenant’s own Seraph fighter. I don’t know if it fits in to campaign but the concept art is of a multiplayer map according to this…
Concept art for a Multiplayer environment (possibly for Spartan Ops).
Gods own anti sonofabich machine
> > Something new that isn’t a Cryptum?
>
> You know what? You might be onto something? LOL
I gave you the base material to think. You solve the rest of the puzzle. 
Jk.
It does not appear to be Conenent. Forerunner, or Precursor. Maybe a Sarcophagus?
no the orb is a cryptum… The reason that it is concept art is that it gives direction… it is possible the direction changed
> It does not appear to be Conenent. Forerunner, or Precursor. Maybe a Sarcophagus?
How tall were the original Promethians? Like 40 foot tall. It looks like a good fit.