No date, official visual, or PV released yet. The lead image was pulled from the Japanese source and is an illustration done by the manga author to celebrate the announcement. Synopsis from AniList:
Konoha Satou has a dark history, written throughout middle school—a fantasy adventure of love and magic about the Count’s daughter Konoha Magnolia and the knights who love her! But when it looks like that dark history is going to be uncovered by her mother, Konoha panics and dies in a traffic accident! Opening her eyes, she finds that she’s been reincarnated into the world of her own dark history as Iana Magnolia, the worst villainess of her own creation!
I haven’t found an English source yet, but will update once I do.
Edit: English ANN source
Ok, so the MC gets iskei’d into their own Mary Sue story, but as the villainess… now I really want to know if the author based it on something they wrote in middle school!