Everything is new!
New hair particles, Body mesh, skin shader, rig, etc.
For Her face I went for a more naturalistic look. For the older models I always went with a glossy lipstick look.
The skin now has realistic pores properly textured on. The skin on your arm is different to the one on you stomach and legs. Also using 8k Udim tiles you should be able to see all the small details, every bump wrinkle, and even some veins!