Is the latest Kagura version up to date content wise with the latest JP version?
Yep, though it's buggier than the JP version.
so dev is plan to make non-eroge games?? hmmmm i would support it if it is not a VN, like i know there's tons of VN games out there but i dont mind if the dev made rpg pixel art style if he can execute a well properly made game.
I don't want to be mean as I love this dev's games, but he hasn't really shown any indication that he can make intuitive gameplay, most of his games boil down to mostly stereotypical dating sims in terms of game content, and he definitely isn't a masterful writer as the narratives and characterization are definitely not the focus in his games.
It'd be one thing to have a dev like Zell say he's making a SFW metrovania, I could see that, if I recall he's the dev for Succubus Affection and already has experience with something similar.
Frankly, I think he's just toying around to decide what he might want his next NSFW game to be, but as people have said, he's pretty much good to retire now if he wants unless he owes the Yakuza money or something.