Unofficial patch notes:
Grinchlin Assault has been changed!
-In the third area, Polyps now spawn in the top-middle and bottom-middle.
-In the second level, all Normal-damage Misery Blocks have been changed to deal Elemental damage.
(Stuff got edited out. Either I'm hallucinating or I've seen some strange bugs.)
I've noticed a few of these things too...
They've made it... easier
And harder
Both at the same time