Just hope ProMovie Recorder could take advantage of the full sensor as it does with all the iPhones yet.
For those who doesn't knows, there are 2 fantastic apps able of taking full sensor video recording, ProMovie Recorder and Guerrilla Filmmaker.
They record 4000x3000 at 120MB/s and the comparison with the main camera preset in the iPhone, pixel by pixel is awesome. Another level in recording options. Something that Filmic, the most known app but not the best, can't do. (of course stabilization doesn't work at full sensor recording)
I could record 4K videos with the iPhone 6 when Apple didn't offer that in the main camera at the time, and the quality is just outstanding, so hope those apps could update and take advantage of the new system.
Having the extra size as they comment is basic for post production further tweaks and Apple can't justify the absence of 8K this year. They would argue that the A16 or the internal drive is not far enough to allow HDR at 8K, so the product "wouldn't meet their spectatives" as they do with many features.
Another shame is that Timelapse has no options for resolutions and the video generated is just crap.
But hey! we are talking about the company whose flagship device still connects via USB 2 to your computer!!! LOL.
A 6 years old iPhone is vintage, but a 20 years old protocol is king!!!