The official website of the Bibliophile Princess anime updated its press release revealing a teaser promo video. The anime is scheduled to premiere in October 2022.
The website also unveiled the official teaser visual:
The anime is based on a light novel written by Yui and illustrated by Satsuki Shiina. The manga and light novel series has been licensed by J-Novel Club and published them in English. It describes the story as:
When book-loving Lady Elianna spots Prince Christopher—her betrothed in name only—consorting with another noble lady, she realizes the recent rumors must be true. The prince has someone he truly loves, which means the annulment of their engagement is both inevitable and fast-approaching. What she doesn’t realize is that this is merely a surface ripple—one of many where the truth runs deep, in a conspiracy surpassing her imagination!– J-Novel Club
The anime is directed by Tarou Iwasaki. The series scripts are handled by Mitsutaka Hirota. The characters are being designed by Mizuka Takahashi.