They've chnged the character names, no doubt?
Nope, not at all! Every name I recognize is the same, and they're even pronounced right. The biggest change is just the "setting".
I'm up to episode 11 - it's gorgeous and enthralling. So far the story has entirely focused on the revenge, I'm not sure whether we'll get any time devoted to what happened before, and it's pretty much entirely from Albert's point of view. It's been a while since I read the book and I remember more of the betrayal and less of the revenge bits, but it seems reasonable accurate... except for the sci-fi bits....