Ive confirmed many are new and not in old videos of the level before the latest patch, tons of new graffiti of figures saying “silo” has been added. Thos must point to a new easter egg to be discovered, since figures have 3 eyes, likely its to do with the pig silo.
I know the level had subtle silo references I noticed before, plus the eye in the birdhouse near the silo that used to show up in instincts vision but now doesnt. It seems they want us all investigating the Silo though, hard to go a minute without seeing the word across the level now.