It seems a lot of flat details suddenly have a noticeable outline...and it doesn't look great. =/
Examples:
Coyote Wolf models have it around their fur ruffs.

Worg models have lines on their tail.

Along with the fur issue.

Hanging vines



Iron fences

Also Arcturis' teeth have the same outline, but I don't have an image.
I submitted a ticket about it, but I got the standard pre-written reply of checking my addons and UI settings, etc. All of us are seeing the same thing. I don't see this being an intended change, as it looks pretty terrible on most things.