Ugh... Weird because I went to 072Project's website: I didn't see any update notes in DLC 2. It's still the same. Well considering that 072Project just updates based on DLSite's version, only Uncensored, what you found is probably it.
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Here is what jarec found btw:
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Which means that Version 4.00 is MOSAIC CENSORED right now, like what Ryuugames say about it now!
So what the Dev did basically was a Complete Edition of his game. The DLCs were removed from DLSite's shop and are now BUNDLED within the Main Game. All we have to do is wait for 072Project to follow suit.
Long story short: NO NEED TO UPDATE ANYTHING YET IN OUR END!