BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
Justina Ireland focuses on Vernestra Ro (and also Yoda) in the second High Republic Young Adult novel. She follows up on the characters from Avon Starros and Vernestra Rwoh from her middle-grade book, A Test of Courage. But this time they’re alongside Reath Silas as the authors show how characters can cross over between formats and authors can handle one another's characters. Plus all-new, unannounced characters!
The High Republic: Out of the Shadows is an upcoming young-adult novel set to be released on August 3, 2021. It will be written by Justina Ireland and published by Disney–Lucasfilm Press as part of the Star Wars: The High Republic publishing campaign.