Forge and Customs?

Has there been any information released on how the Forge and Custom Game systems will work, or the file sharing options?

I’ve been looking and haven’t found anything besides a few clips of screens in docs.

And yes I already know that Forge won’t be in H5 because he died in Halo Wars.

No new information has been reported, just wait until Gamerscom, I’m sure it’ll release some information.