What's so hard to understand there? What we will get is a 4K and HDR containing Pro mode and no other graphical improvements...at least for now because they don't have the time right now.
The Pro footage we saw so far was in 4K and HDR as well but the improved lighting, draw distance and texture quality (well, 4K might display textures clearer) that the journalists allegedly saw was very likely not actually there. The journalists were excited, the 4K and HDR were so pretty and they automatically assumed everything else was so much improved as well. It's actually fairly natural to think that. Even more so if you don't have a direct comparison to regular PS4 footage. But Tabata now himself said there will be no additional graphical improvements (I sound like a broken record by now, sorry) and I believe him. When I looked at that Pro footage some weeks ago and compared it to the recent regular PS4 gameplay I came to the same conclusion. The draw distance, lighting and texture quality seems to be the exact same as in the regular PS4 version.
I think it's this apparent absolute confidence that
none of the enhancements
they already showed in actual footage (if we're supposed to believe that S-E isn't lying by showing this footage), perhaps because they were ones that didn't require much manual work, are 100% apparently not going to be in there
at all without proof just because Tabata has said they don't have time to "really take advantage of the Pro", while not going into detail about what was easy to implement. He didn't say they did nothing.
Not actually there at all? That's some pretty wild speculation.
Given that S-E, atleast just in big-budget games like FF, are known for modelling detail beyond what's expected to be viewable, I don't find it hard to believe that even just the resolution bump and IQ enhancement will give a rather nice graphical upgrade.
The basic improved performance of the Pro and 4K HDR could by default enhance the draw distance a bit (which they've already improved in the OG version given the last demo as well), real-time lighting (especially combined with HDR), and texture quality atleast in terms of how they look since obviously the textures themselves will be the same (like you said).
Higher internal resolution IS a graphical improvement.
Where did you see this footage? Did you get to actually go to one of the events and see it live directly on a 4k hdr tv? Because seeing it on non-4K, non-HDR youtube video or stream and a regular monitor apparently does it no justice.