It's a Kamadan.
Mr. Perkins, please don't ruin Barrier Peaks or anything other classics by hitting it with the WOTC Branding Iron.
There are vast numbers of 3rd and 4th edition adventures that can be butchered and not get any worse.
Yeah, they did such a horrible job already with Temple of Elemental Evil.
Oh, wait, they took an old classic, totally updated it, and made it into a smash hit that's pretty highly regarded and played by hundreds of thousands of people. (Considering that the Adventurers League played it, that's not an exaggeration). What bastards WotC would be to take some dusty old module that virtually no one who was born after about 1985 has played and doing the same thing.
(snip) It will probably be a mish mash of Against the giants and barrier peaks given the other hints floating around.
Oh and if Giants do Shakespeare, I'm betting King Lear. Cloud Giant King splits his kingdom in three, with much plotting and death among the children, with the PCs needing to choose a side. Also, blinding. A blind, deranged, rampaging frost giant on the loose would be fun.
I really hope it won't be any variant of barrier peaks in FR