Currently Half-Way through Moorcock's/Storm Constatine's Silverheart, based on the Multiverse of Micheal Moorcock. It seems to be a upon a new plane of existence, rather than one already detailed elsewhere. However, teh action takes place in a self-contained city locked in an icy waste, so it could be simply an area within one of the Icy Realms Moorcock has already detailed.
I'm also half-way through Death's Messenger, a Warhammer Novel. So far I like it. It's supposed to tie in with the Warhammer Fantasy Roleplaying Game (as opposed to the Miniatures Game), but I haven't noticed any difference really. I suppose if I knew the ins and outs of Warhammer & WFRP, I might notice how this book differs, but I don't.
I also just picked up Harlon Ellison's 50 Year Retrospective. That one might take me awhile.