If it fixes the horrid pop-in I'll buy for WiiU, if not I'll stay with the Achievements.
What do you mean by the "pop-in"?
He's talking about the way graphics in the distance suddenly pop in to view as you approach.
Is that when all of the sudden something shows up when you get near enough to it?
There's also a "softer" version of this effect where it looks like objects are going from full transparence to solid state. This is less noticable and it's called draw-in.
On topic: Great. I am not going to buy it though. I only buy two Ubisoft games per decade and I want to save the other purchase for later. Wasn't all too happy about Rayman Origins.