Let's just say when you're looking for LotR pictures on the internet since 2006, you've seen a lot.
This particular image for example is from one of the oldest lotr image hubs I know of:
theargonat.cc
Pretty amazing that it's still online. The website breaths early 2000s.
I've watched the whole Comic Con Panel and I would advice to not get your hopes up guys.
PJ confirmed that there is some unused footage and that he MIGHT release it someday in some form. But he didn't really sounded like he WANTS to recut the movies or really tinker with the old footage.
Yes, it really breathes early 2000s, but it's indeed really detailed in collecting images of characters or fictional characters
Of course, PJ never mentioned it directly, but it was an assumption of mine given the fact that he also refers to the whole 'circularity' of the LOTR trilogy like a single cinematographic masterpiece of more than 10 hours (including those deleted scenes) that should kind of deserve to be exposed in its all entirety (something that I could notice in various other interviews), even the parts left out in the theatrical and commercial versions.
At least, this is what I think that PJ has in mind, considering also the project of the 'museum'
Furthermore, last but not least, you have to consider the economic element, since 'reboot initiatives' of this kind often lead to the release of reworked and expanded/extended versions of films or other multimedia realities
Even though I don't really regard it as a negative aspect, since LOTR would surely deserve it