I've just skimmed through one of the Polish reviews (gry-online) and I have to say that it goes quite in line with my impression of the game based on what I've seen so far. 8.5 seems like a fair score.
Off the top of my head: the game's good but a bit buggy and lacks polish, the world is slightly less open and smaller than previously stated (it takes 13 mins to traverse the biggest area in the game on horseback; including slowing down to regain stamina, looking at the map and finding your way around various obstacles). Nice story, lots of things to do, interesting side quests, great music and a well-designed world. The graphics are good but nothing to write home about and a far cry from the trailers we've been shown. Water looks worse than in HL2 which is a bloody old game.
Basically, W3 is very good but some annyoing quirks keep it from being 10/10 material. Sorry for my shoddy translation but I'm a bit sleepy today.
I was genuinely surprised that hardly any review mentioned the game's graphical presentation but I think I know why;p Bear in mind, though, that this is about the PS4 version but it's doubtful the game will fare much better on PC graphically since the devs said they strived for visual parity across all platforms.
Here's Gamescom 2014 vs PS4 retail (taken from a different Polish review which also mentions the game looking noticeably worse than in previous gameplays and the graphics being generally a mixed bag):
http://i.imgur.com/EZCAQKa.gif
EDIT: Yes, I'm still banging on about the graphics
![Stick Out Tongue :p :p](/styles/default/xenforo/vbSmilies/Normal/tongue.gif)