I came here after reading the verge review thinking no one saw it yet, ha, thanks tjcinnamon, you actually quoted more than I planned to.
One thing some people missed because he emphasized the automatic functions, yes, you can manually set it to 4K/30Hz for DV compatibility. I didn't see that 24Hz was possible, he stated that was not an option, not sure if apple is working on this or not.
I think most issues will be solved with future app updates, as I am sure the apps can take advantage of 4K/HDR, but, the HBO GO app he used as an example probably hasn't been updated yet, same app that is used on the ATV 1080p.
Some of his presumption is how it works right now, but, the app developers are continuously working on their apps, (channels are apps), and apple is always working on the software, pushing out updates fairly often. ...When the last ATV first came out, it had some limitations that were later improved upon via tvOS updates.
He indicated Apple is working on an Atmos solution, (again, DD & DD+ are the main audio options for any and all VOD/Streaming services, Atmos being delivered via lossy DD+), so, perhaps if we give them feedback, this will speed the process: https://www.apple.com/feedback/appletv.html
For those that didn't read the whole article, Apple is working on improving the experience: "The good news is Apple told me it’s continuing to refine the processing it’s doing with the goal of making HD SDR content look normal, and the Apple TV gets regular software updates, so it’s not an empty promise. But right now, if you just want to pass along an unmolested HD video feed, you’ll have to change the output settings of the entire system."
If you go back to the article, just below an ad is a screenshot likely missed, it shows a list of formats he can choose for his TV, (he's in europe, so he has 50/25Hz options instead of 60/30Hz).