In the trailer i saw some sort of giant frost creature.

It was tall as a giant but had a face closer to a trolls.

Any info on what this is?

(sorry for typo on title)

armored troll i think its called

But it wasn't wearing armor.

See what you mean. Just had a look at the trailer again and there is not one piece of armour (except a loin cloth). Either people calling it armoured are wrong or more than likely, that is a frost giant or something and not the armoured troll.

I wonder why frost giants haven't been mentioned as that clearly is one.

So it's not a furry vampire?

Werent people saying it was Karstaag? He was a cuddley little (big) frost troll from Bloodmoon with the same features.

Better not be! I was actually a lil creeped out by that big bug eyed frost king!

Hopefully its the Frost Giant, unlikely if it is the Armoured Troll then it would be a weak desgin, but I think the armoured Trolls will look amazing.

It's a Frost Giant. Looks incredibly similar to Karstaag.
I guess Armored Trolls take up the same follower slot as a Dog. That means you can have a follower plus a Armored Troll. Know what would be badass? A Werebear Player, with Werewolf Aela as a follower (There are mods that allow her to transform in combat), and a Armored Troll. Nasty

It is almost certainly a frost giant. It was said ages ago that people thought it looked like Karstaag and was most likely a frost giant.