0.2.4 is the current most up to date release. It features 8 days of gameplay and story progresses greatly compared to 0.2.2. There is the town battle arc, new characters/locations, cards and sex scenes. I think that people that were already enjoying the story will love this update.
0.2.5 will be the new version released. It has no limit of days for the gameplay (unless you advance on the main quests line). You can just play leisurely and collect the cards at your own pace. It took a while to implement as I had to rework basically how the game worked from the ground up. I had to change around 60% of the code of the game, so the first weeks were really driving me nuts ahah. In the end it's looking awesome now (imo) and more epic. With those changes, other things had to be implemented, quest system(main quest/side quests), inventory system, card collection, etc. Fixes to bugs, renders, redesigns on some old characters, new characters and cards. The story also progresses a bit compared to 0.2.4. Some previous characters that weren't yet able to play versus are now available like Elena and Maeve.
Oh there is also the romance screen created with replayable sex scenes.