Well many of those features (namely heat, battery life and camera quality) still have questions over 'em that we need to see reviews with substantial use for.
It will of course be priced way out of my budget anyway. Which bums me out.
Tech journos did some tests during hands on. It was common for the phones to overheat during 4k recording and that doesn't happen anymore. Battery life was great on the Z3 line, since they didn't change much on that front I expect the same here. For camera, well, there are already comparisons online, so judge for yourself.
I don't see how a size increase and a bump to 1080p would make it better. I'd love the original if it had a calibrated screen, ran stock Android and perhaps had an S808.
One thing that I've thought about is that everyone is nagging on about battery life, but even a 4000mah battery will "just" be a 33% improvement over 3000 and we're approaching tablet sizes for the handset when we go higher. That got me thinking of the Moto G which has great battery life with a relatively small battery, but its S410 is still on 28nm LP! That's the same process used by high end devices in 2012 and since then we've had 28HPm, 20nm and now 14nm is to Qualcomm. Would anybody like to see an otherwise high end device with a theoretical S410 at 14nm? It might need a slight GPU boost to handle 1080p comfortably and the DSP is limited at 13MP and 1080p, but other than that I don't see any issues with it. The speed seems fine and when my phone is slow it's something else like storage.
I'm not sure how much, but more RAM also consumes more power so that can't just be bumped. I don't feel very limited by 2GB, but understand wanting more (I looooove a million tabs that are active and instantly available on my desktop).
I'm usually very vocal about the bullshit that are bad calibrated screens on Android. The Z2 was good on that front, but they messed up with it on the Z3 for whatever reason. I expect it to be better this time. Xperia OS is now very close to Android, and Sony is already testing an even closer to stock version that you can try it yourself if you have a Z3.
Why do you want the 808? It performs worse than the 810. Remember that Sony fixed the overheating issues with some heatpipes and thermal paste.
it is kind of annoying, and that outdated UI/icons. Bleh. Still like the idea of a phone like the compact premium. Wish more would do it.
Unfortunately, it will only be released in Japan. It should be the standard version for everyone, though. Sony should have just released the Compact Premium and the Premium. It would be good enough. No need for the mid version at all. Even the Z5C that they're going to release over here... it still bugs me a bit. I would
definitely buy it if I wasn't so set on going the iWay this time.