We're still a little while away from launch. Should be an interesting few days. I'm going to be watching the Ubisoft support forums and all their PR channels like a hawk.
Honestly, I feel this is going to get a similar reaction to AC4: BF. Fairly buggy, but otherwise solid. That's not too bad when you consider the amount of internal turmoil Ubisoft is going through. I'm just going to find it hilarious when people walk into modern cafes and find out the interior is from a heavy biker gang bar.