A few times they use terms like adjustments and such but what happened was additions or other things that arent so much adjustments. OR that whole BST pet TH equipment thing where they said one thing but apparently later never said that. I think gnat was in the dats but it wasnt available. but then they unlocked it and had in the update notes:

The following additions have been made to Monstrosity.

The gnat family is now available for play.



New instincts have been added.

Some people thought they actually added new instincts but it was just the ones that come from gnat which was expected anyway.