The changes are listed in the readme for the mod. IIRC it's pregnancy, exhibition (including the cleanup/undress options) and a couple of balance changes, but the readme will have your answer.
CC's Preg mod has way more stuff than that.
Like the discipline system, which essentially allows you to make custom battles with wanted (and boss enemies) by calling them into your office under the guise is disciplinary action.
Being able to tan her skin and change her hair color.
Waitress mini game expanded. So that if you bring an inmate a wrong drink you have to do something to appease them. Which can include flashing her tits, taking a drink with them, or paying a fine.
Tons of QoL tweaks and cheats to do stuff like unlock surrender by default, faster passive learning (this actually got added to the base game, just like exhibitionism did). Allow enemies to call for reinforcements. And tons of other stuff I didn't bother to list.
And it's all configurable to what extend you want it, including the ability to just completely disable stuff you don't want. Like if you don't want pregnancy you can just completely disable it.
This is what the config file for the mod looks like:
You must be registered to see the links
There are tons of options to fine tune the game how you want it very easily.