Will there be another book with Percy Jackson and Annabeth as the main characters?

Rick Riordan, the author of the Percy Jackson and the Olympians series, has not announced any upcoming books focusing on Percy Jackson and Annabeth as the main characters. However, there are several other books in the Percy Jackson universe that feature these characters in prominent supporting roles. These include:

* The Heroes of Olympus series, which follows Percy and Annabeth as they team up with other demigods to save the world from the evil Titans.

* The Kane Chronicles series, which features appearances from Percy and Annabeth as they assist the Egyptian gods.

* The Magnus Chase and the Gods of Asgard series, which includes Percy and Annabeth in minor roles.

* The Trials of Apollo series, which features appearances from Percy and Annabeth as they aid Apollo in his quest to reclaim his godly powers.

Additionally, Riordan has written a number of short stories and novellas featuring Percy and Annabeth, which can be found in the collections "The Demigod Diaries" and "The Son of Sobek."