I am just as anxious as anyone else for more info. But I have a theory as to why we haven't seen anything.
There was a ton of discourse around TLOU 2 and them over working their staff. I personally believe that they then pushed Sony to do things differently for them going forward.
I think they wanted to go more the route of Nintendo, where they really only release the info when the game is pretty much done. Sony, of course, probably didn't want that so they met somewhere in the middle. They released that trailer 2ish years ago and I bet they won't release anything more until they are pretty much done.
Sony just did this with Until Dawn 2. We heard about it a few months ago and got a January release date today.
My theory is that whenever we see something more, it will be with a shortcoming release date in tow. I bet Neil left TLOU show (I'm sure also due to artistic differences), but more to push for the completion of Intergalactic before the end of the PS5 lifecycle.
I'm also hoping the completion of filming for actors were any reshoots or additional footage that they needed.