YSome suggestions are that Asus will bin the better panels so they can guarantee 100hz however, it looks like they are simply going to do what Acer did with the same screen: pot luck. I guess we cannot be certain until it is released.
Yeah, I have NO IDEA why people are thinking Asus will treat this monitor any differently. Why exactly would they do that? They didn't do so with the PG279Q, having all the same faults as the XB270HU which was out many months beforehand. I heard it all then, people saying Asus were delaying release to make sure they got it right... HA! The only thing that would give the Asus the edge is if they offer a no dead/stuck pixel policy, which they really should on a £1K monitor!! All the other issues that have affected the X34 though, excessive BLB, not reaching 100Hz and scanlines in some instances... there will be no less chance of encountering these on the PG34.
Personally, as big a fan as I am of the 34" UW format, I just can't stomach any of these current monitors. The tech just doesn't justify the price, and with other monitors due later this year, the likes of the X34/PG34 are going to date and devalue pretty quick, especially once DP 1.3 and Pascal/Polaris are on the scene.