Yeah I just checked up, the Monster Girl Beauty Pageant, Trudy Kiss Art, Warlock Kiss Art, Werewolf x Trudy art and scenes etc. are all seemingly not available in the downloadable builds (at leas at the moment). I assumed everything was fine due to the new version number (when opening the game), but I see I was mistaken.
It seems like it could literally be the v0.3.07.0 build just renamed to v0.3.08.0; because it doesn't look like the new content is in. This idea would be supported by the fact that the v03.07.0 Changelog.txt is still listed in the downloaded folder (after downloading the game from the "Download" section); not the new Changelog.txt (for v0.3.08.0).
It could also be that the links to the new build versions are taking a bit to update, because it shows that the Changelog.txt listed under the "Download" section was updated 2 days ago. The new download links themselves are around 7GB+ in total; so that could be it (taking a bit to clear). I'm not sure though.
Sorry for being somewhat mistaken with my assumption; I should of checked more in depth before replying to this thread.