Really? I am not an expert on all aspects of lore and didn't know this

http://www.uesp.net/wiki/Lore:Ebony

I though Glass was volcanic glass though. Maybe Ebony is like obsidian?

If a high tier armor was made with wood... that would be... quite stupid. In Nirn, Ebony is some kind of super-metal. Daedric is actually ebony bound to a daedric soul.

http://www.uesp.net/wiki/Lore:Ebony

Now I'm wondering... if only daedras are supposed to know how to craft daedric stuff... why are we able to?

I know it has been confirmed that there will be no visual armor customization, but how can you explain http://i55.tinypic.com/14nfz48.jpg picture?

We all assumed upgrading explained that, but now apparently upgrading doesn't affect appearance. Either they changed it (doubt it) or someone made a mistake/we are missing something still.

It seems likely that customising armour will be possible via the crafting system, as opposed to the smithing system of upgrading. Personally, I think this separation is great news, since we won't be forced to nerf the protection rating of a certain armour if we want to retain its 'early' look.

Upgrading leading to automatic visual changes would have been the worst outcome, since it would have removed any personal input