I haven't read a *ton* of Wonder Woman stuff, but I definitely know this one is different. From her origin to her personality, there's quite a lot that's changed.
First, the costume. Absolutely love it. Wonder Woman's patriotic bathing suit is dated and ridiculous. While this one isn't *perfect* (I would probably drop the tiara and maybe go with somewhat simpler bracers), I do like it a lot. (Which is disappointing because they ended up dropping it in favor of another 1-piece bathing suit in the New 52 version of Wonder Woman--see Wonder Woman, Vol. 1: Blood.)
Second, unlike in, say, Infinite Crisis, this story has a much more media-traditional view on violence. By that, I mean Wonder Woman kills her enemies in battle much like the protagonist of an action TV show or movie would. Given DC's typical (frankly, rather weird) aversion to lethal combat, it's a little jarring. But, really, given that she's supposed to be an Amazon warrior, the idea that she would find a way to non-lethally stop *every* one of her opponents always struck me as rather silly (*cough* Maxwell Lord *cough*). I don't expect her to be brutally executing people, but all of her enemies being conveniently "knocked out" is rather much, IMO.
The story itself is pretty interesting. If I have one big complaint, though, is that's Straczynski goes a little nuts with the exposition. If he wants to explain stuff to the readers, that's fine--do it in "narrator boxes," not by having the characters stop what they're doing and explain everything to each other. There's one particularly egregious version of this in, I believe, the fourth issue, where a villain is confronting Wonder Woman and dismissively tells her his life story. If that doesn't make any sense to you, it didn't make any sense to me, either. He can't simultaneously be acting like talking to her is beneath him and also acting like he's pulling up a couch at his therapist's. (And then, not long after that, this villain we've just been introduced to--who has a rather interesting story, however weirdly conveyed it is--disappears from the rest of the book.)
I can't judge the entirety of the story well, though, because this is only part of it. It ends on a cliffhanger, and I'm not entirely sure why they don't have a larger collected edition that has the whole story arc. Yes, it'd be 14 issues long, but that's not completely absurd for a trade paperback--each volume of 52 (e.g., 52, Vol. 1) is 13 issues long, so this wouldn't be too far off from that.
Anyway, it's a good read, and if you're interested in a very different version of the character, it's worth checking out.