Will they? Pretty sure they haven't mentioned where they'll be selling the English version. Most people just use ENG DLsite, which still has censorship requirements.
I believe the dev still can't give a company their art uncensored and it needs to be uncensored by a third party anyways. If the dev hands over uncensored art to a translation service/western store themselves, it's admitting they own it. If they hand it over to a 3rd party and that 3rd party uncensors it in another country, that's different. I think that's how they get around the censorship laws. That would cost money and take time as well.
They already had a multilingual version temporarily and it wasn't uncensored. Only time I've seen a game get uncensored is when it's picked up by certain companies. The dev also hasn't mentioned uncensored art anywhere.