They've already removed the 60fps claim, and in fact the "4K later this year" is also probably wrong.
PUBG will not be Xbox One X enhanced when it arrives first on Xbox Game Preview. It will only get enhancements when it's officially released across all platforms, which could happen next year.
The drops are short, but
this Digital Foundry comparison with
Forza 6 shows they do exist. "Locked" is not accurate for
FM5 (though "nearly locked" is).
This is a misleading way to state what CBR does. In many ways it's more accurate to say that 1800c shades 5.76m pixels, just half of them were shaded a frame ago. This more properly describes both the benefits and drawbacks: pixel value accuracy across the image is much higher than with standard render/upscale of an identical number of same-frame pixels, but temporal artifacts and inaccuracies can be introduced.
You should not use the Gearnuke comparisons to draw any conclusions, they're very distorted. Both One X and Pro shots have been downsampled to a smaller size, and not one that's a low-integer ratio (they're 8/15ths). This means the tool used for resizing can have had a major effect on clarity, especially since they have different native resolutions to begin with. There's also JPEG compression involved--not terrible, but when looking for high-frequency detail that can get in the way.
Strange. If I hit the "Show More Games" button at the bottom I get to 38 in the main list (plus 4 featured up top).
I wouldn't take this as too much gospel, though. As Microsoft explains elsewhere, this is all forms of 4K and not just native (witness
ACO at the top), but it also includes a game which isn't any kind of 4K at all:
ARK runs at 1080p.
Which isn't to say that the list is wholly suspect--8 of these games are already running native 4K on PS4 Pro, and 2 more are very likely. The more powerful One X shouldn't have any issue doing the same. But this isn't a source you'd want to rely on for 100% accuracy by any means.