If we are lucky the sequel comes out this year maybe within this month or the next, but I believe it would be push to next year release. This is the QA the dev posted on his Ci-EN site. I don't know how far the updated demo is but i believe it goes to mid chapter 2.
If we are talking about official that would take maybe 1-2 month? but if we are talking about upload on this site with the Ai translation or something maybe just within 2-3 weeks of it release.
This info is wrong. The dev already mentioned in a comment to someone else asking on their ci-en page when release date by replying that Selenoxia will be released in 2026. An official release will take 1 year MINIMUM if not 2 from Kagura.
Consider this:
Celesphonia release date: December 2020
Official translation from Kagura: May 2022
Enicia release date: May 2023
Official translation from Kagura for Enicia: May 2024
But Enicia is much smaller game than Celesphonia and you can bet that Kagura put top priority on translating these games as soon as possible because they are in most demand and sell the best even then translation takes a long time.
Celesphonia had 7 chapters plus final boss stage on release and DLC in November 2021 but the dev already said on ci-en that Selenoxia will have at least 12 chapters. That demo on his page contains first 2 chapters that gives 15-18 hours of playtime. Assuming that dev plans on sticking to Selenoxia being 12 chapters at same size we are looking at a much bigger game than Celesphonia and MINIMUM 2 years for official translation from Kagura if not longer.
The dev isnt hinting that Selenoxia is going to be released very soon either so it will probably be released in late 2026 so expect an official translation from Kagura no earlier than 2028 if not 2029. Dont expect an official translation sooner. If dev releases DLC like he did for Celesphonia that is huge in content after release then expect official translation in 2029 because Kagura would include that DLC in translation before selling it.
The recent payment method censorship leading to delisted adult games on itch io and demands to delist on Steam under threats of no payments allowed at all for all games probably hit Kagura hard too since they only sell translated adult games which will likely lead to layoffs for translators since their sales took a huge hit and the payment censorship of adult games could lead to outright ban on selling all adult games on Steam in the future and Kagura is at the mercy of steam for most of their sales. Steam already delisted and banned many adult games and the scope will likely expand to ban even more games. All of this to say it will lengthen translation time since fewer translators will be employed by Kagura and if all adult games will be banned on steam in the future which is possible then Kagura will be out of business too and a delayed translation effort will turn into no translation period.
Now you might think ok so what just use Mtool for translation right? Well the free version of it is trash translation dont know about paid one. But AI translation will never be as good as official translation and most importantly it does not translate text within images which Kagura does as well.
In the meantime better hope old 3in1 gets official translation soon and that it is not given up. If new 3in1 (maple?) or VIP takes another 2 years to develop without issue, translation will take time too but those are volunteer efforts instead of paid full time translation as a job so who knows how long that takes or they quit translating.