Because "Why not?" here's a list of the major changes in 1.0.0 over whatever the previous version was.
Addition of Erosian Orgy art.
Changes to Sluttier Altina's affection scenes during the Reunion.
Update to Sierra's comment on art completion in the Ch3-Ch4 interstitial.
Erosian Trade Prep investment card now displays correct information.
Reshuffling of some of the dialogue for the creation of the Wendis and Robin portrait.
There have been some minor corrections to the ledger script that did not get picked in my comparison of the event contents dumps, but I'm not sure which updates they were included in.