While the camera software can still be tweaked from the prototype unit stage, that has been used in an Xperia Z preview published today, the screen will most likely not undergo any changes.
The display comparison picture with other current flagships reveals something we've noticed on all Sony high-ends with the Mobile BRAVIA Engine tech - weak viewing angles and greyscale black levels. Colors get significantly washed out and brightness is diminished when you tilt the phone in any direction, so that's something you'd have to live with when it comes to the Xperia Z as well.
Its 5" display has one very important virtue that compensates, though - the incredible 443ppi pixel density is a sight to behold, as you can see in the microscopic comparison with other modern smartphones; the image stays smooth even when zoomed in, unlike the HD screen phones around it.
As for the camera samples, they are mostly decent in the "Superior Auto" mode, and actually quite good in the "Normal" mode, but indoors the situation is as bad as with most phones but Nokia's PureView efforts. We might have small software tweaks for the retail units so as noise suppression doesn't smear fine detail as much as in the samples below, but overall the main advantage of the Exmor RS sensor seems to be the HDR video function, of which we've compiled a playlist for you.
Sony Xperia Z screen comparison, more camera samples emerge