The preview videos are helpful to my thinking about what I might want to get, if any. Right now I'm in the process of going through the 950+ pictures I made recently in Denmark and Sweden with my G7X II. The results are so pleasing that I must consider whether there are any reasons to upgrade this camera for my purposes. So far I've shot 6,370 pictures with the camera, and have had very few moments where I wished it had or did something different. For travel, the 24mm equivalent is not quite wide enough for everything, so I do take some shots intended to be stitched together. That works well enough that I prefer it to using the panorama mode on my iPhone, which does work rather well for some types of shots, say a 180º pan of a town square. I see that on the trip I shot exactly one video. Outside the modern art museum in Stockholm there is a fountain that is part of the exhibit of fanciful sculptures. I shot 28 seconds of 1080p at 29.whatever fps. It looks great. I'll probably run it through Compressor and embed it on the web page for that part of the trip, maybe at 720p, perhaps with a link to the original.
So with these cameras coming out in August and with my leaving for another European jaunt in October, several considerations come to mind: Do I buy anything before October, or content myself with the II for that trip? If so, do I get the new 5 or the 7? (I've already looked at the competing Sonys and decided they did not suit my purposes, especially the new model with the longer and much slower lens.) My annual video project comes up in June, so video considerations will suggest a spring purchase, maybe when there might be some attractive prices. The 4K will be nice for editing purposes. My iMac and FCP X have no trouble at all dealing with that, and the extra resolution can come in handy for cropping, etc.
I watched the Czech preview above in full screen on my 5K iMac, and it didn't look bad at all.
So briefly, there is the G5X II. Is it really close enough in size to the G7X that it would be handy enough? The latter fits my pants or jacket pockets just fine. Would I use the flip up viewfinder? In October, 2016, I shot a
Blue Angels practice show in Pensacola. I couldn't see a thing in the screen in the bright sun, so I just aimed the camera in the general direction of the planes, and it turned out pretty well. I was more intent on seeing it in person than in shooting video anyway. Maybe with the viewfinder, I'd have looked through it and missed seeing the show. I can't really think of anything since then where the viewfinder might have helped. But then I don't shoot a lot of video anyway. The slightly longer lens might be nice, especially since it seems to be as fast as the G7X II. If reviews suggest that it is an even better lens, that could be enough to steer me to the 5.
As for the G7X III, it still is minutely smaller, and so a bit handier. Vlogging or live YouTube feeds are not considerations of mine. I don't miss having a mike jack. My annual video project involves pick-up basketball games, so the audio consists of squeaks from the shoes and bounces of the ball. No one cares about the audio fidelity. The in-camera mike did fine on the video in a review above.
I've never in my life shot 24fps video, so I'm very unlikely to miss that in either camera. I think several cameras that I own can do that anyway, if the urge ever strikes me. I guess I shot 18fps on Super-8 back in my youth.
So maybe for me it comes down to if and when 4K capability will be useful to have, and whether the new lens on the G5X II has an improvement in image quality.