The five updates during April and May will be dedicated to v4.0 Variety and Polish Overhaul, which is explained in detail
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. The TLDR about the overhaul is: Variety = more diverse and distinguishable character customizations (incl proper ethnic & age differences) + much bigger selection of clothes + NPCs dressing according to their location and job + more daily activity and furniture animations + high attractiveness NPCs actually look hot. Polish = minimize clipping issues (body poking through clothes, dick poking through partner's stomach, skirt not following legs when sitting down, etc) + no more vagina deform when too many morphs are used + smoother gameplay due to clothes taking less time to load, bug fixes, UI enhancements and optimizations.