Okay, quick summary to answer questions people have asked:
- Preview ver. doesn't have outfits (other than the twintail swimsuit, which you earn from completing all twintail range challenges to S tier), nor does it have a working console.
- Old saves (from previous versions) won't work because of the new version. I feel like that should be a given. Any other issues with loading saves are just bugs.
- Boss doesn't have an H scene in the preview I think. Otherwise, there's no new H scenes. No, it's not the dog from the older builds, and it has a different H scene to the dog.
- Yes there are a lot of bugs, be patient.
- New cumflation system is fully animated and functioning as far as I am aware. I don't know if it's in the preview version, but just in case, you should check the 'h content' part of the menu in case you have it turned off. I know the first thing I checked was that, to make sure it was turned off before I started playing.
- You get money by completing quests and looting zombies, they will have wallets and survivor supply, which you will need to open ('use') to get the money from. Survivor supply will only sometimes give money (I think, I'm not 100% on that) but will give other things like scrap and ammo, while wallets will only give money.
- Additional keybinds that might be missed by people are - 'K' for the skill tree (IDK if that's in the preview), 'tab' for the inventory, and 'H' for the keybinds display.
- There's no cheats (unless you count using the console to get outfits in the maximum version)
- There's no swamp. There is an underground area (sewers), which might be what people are referring to?
If you want the maximum version you can pay the 4 dollars for the advanced tier of the patreon and support the dev, or wait until the next version to be released. I'm sure there will be bug fixes and stuff in the meantime, and maybe Shine will add the boss H scene to the preview if she's feeling generous.