for me Z1 specs is enough... waiting till Z2 spec confirm... if just a bit bump + features that I rarely care such as the audio chip, 4k recording... I will get the Z1... cheaper price and hopefully with ZU panel... IGZO panel might be better but if due to this bump+a bit processor+ram bump plus other spec that I don't care much... I'll buy Z1...
If big bump:
- IGZO screen
- processor+ram
- camera photo quality nearly QX100/ Nex series- bigger battery
than I will get Z2...

well not coming this few years. 1/1.2" or 1" sensor still more ideal
im still holding these LCD panel lotteries claim, i believe they may have leftover, but from the organization point of view, those lower grade LCD can always be put in lower end phone, hence no problem depleting stocks.
Second point is, although im not 100% sure, the Tri-luminous and some enhancement over the screen should be tie to the display quality, is not all screen can be claim Tri-luminous or what. Else Sony will facing a big liability issue by claiming their product Tri-Luminous but supplying none.
The thing is, from most of the hands on, there are variance in display quality, my suspect is Tri-luminous display panel supply hasn't stable yet, and Sony rushing to produce the phone for IFA, or any strategic timing, thus the sample phone might use the old panel. But their main point showing off for product introduction is the camera, smoothness, and the phone capability. ZU has gain Sony some good reputation in screen and introducing those Tri-luminous, x reality and opti contrast, so they focus on another agenda this time. But reviewer is always nit picking on stuff and Sony can always said those are beta product, is not final version, all preview may not held 100% product offer in market.
Lastly, Sony using multiple manufacturer for the display panel is true, no organization will focus on one supplier, that would be risky, for the quality of multiple manufacturer, im not sure on display quality. Sony is not stupid, for all the nay sayer or observer, please wait til the actual product offer in the market before comment. All preview unit might not represent the final unit.
*one more note, wondering if Malaysia has Samsung hired bashing boy like oversea, heheheheh.
Above claim is only from my own perspective, viewer discretion is advise. Dont attach me.
Yes samsung do have blogger evengelist that praise their product like god in their blog
hrmm this just blew my mind about Z1's camera weakness
Z1 vs Nokia 1020 camera review