Title: The Trials of Apollo
Content:  The Trials of Apollo is a pentalogy of fantasy adventure and mythological fiction novels written by American author Rick Riordan that collectively form a sequel to the Heroes of Olympus series. It is set in the same world as the Riordan tales  Percy Jackson and  Heroes of Olympus and the references to characters and happenings from earlier series prove this. A supplementary book, Camp Jupiter Classified, has also been released in addition to the main series. The first book in the series, The Hidden Oracle, was released on May 3, 2016. The second book in the series, The Dark Prophecy, was released on May 2, 2017. The third book in the series, The Burning Maze, was released on May 1, 2018. The fourth book in the series, The Tyrant's Tomb, was released on September 24, 2019. The fifth book in the series, The Tower of Nero, was released on October 6, 2020.
Title: The Heroes of Olympus
Content:  A sequel pentalogy series titled The Trials of Apollo was released, with the first installment, The Hidden Oracle released on May 3, 2016. The second installment, The Dark Prophecy, was released on May 2, 2017. The third installment, The Burning Maze was released on May 1, 2018. The fourth installment, The Tyrant's Tomb was released on September 24, 2019. The Tower of Nero, the last book in the series, was released on October 6, 2020.
Title: The Trials of Apollo
Content:  The Dark Prophecy is the second book in the series. It was released on May 2, 2017. The book continues the story of Apollo as the mortal Lester, as he leaves the safety of Camp Half-Blood and journeys across North America to restore the remaining four Oracles and learn how to defeat the Triumvirate of Roman emperors-turned-Gods while being helped by Leo Valdez, Calypso and Festus the bronze dragon, the Hunters of Artemis, and some new characters. Apollo has to face and defeat the second Triumvirate emperor- Commodus, with whom Apollo shares an awkward and regretful past to obtain the Throne of Memory for his next prophecy. Apollo travels to the Oracle's cave and gets his prophecy and comes back and defends himself and his friends from Commodus.
Title: Camp Half-Blood Chronicles
Content:  The Trials of Apollo is a five-part series of books written by Rick Riordan. It chronicles the life of Apollo after his being made mortal by Zeus as a punishment for his actions during the Second Gigantomachy. The first book, The Hidden Oracle, was featured on May 5, 2016. It also features most of the characters from The Heroes of Olympus and Percy Jackson and the Olympians series.
Title: Camp Half-Blood Chronicles
Content:  The Dark Prophecy is the second book in The Trials of Apollo series. It was released on May 2, 2017. Apollo goes on a journey with Leo Valdez and Calypso to find one of the ancient oracles.
Title: The Dark Prophecy
Content:  The third book of The Trials of Apollo is titled The Burning Maze and was announced by Riordan on October 17, 2017. It released on May 1, 2018.
Title: Percy Jackson &amp; the Olympians
Content:  Riordan's follow up series to The Heroes of Olympus book series is titled The Trials of Apollo, which is directly in line with Percy Jackson & the Olympians and The Heroes of Olympus. It is written from the point of view of Apollo, having been cast down from Olympus by Zeus. The first installment was titled The Hidden Oracle (released May 3, 2016 ). The second book titled The Dark Prophecy was released in May 2017. The third book titled The Burning Maze was released on May 1, 2018. The 4th book of the series, The Tyrant's Tomb was released on September 24, 2019. The fifth and last book of the pentalogy, The Tower of Nero was released on October 6, 2020.
Title: The Hidden Oracle
Content:  he promised that many of the characters from Percy Jackson & the Olympians and The Heroes of Olympus would return in the new series. Because Apollo is the god of poetry, the name of each chapter would be a "bad haiku". The cover, illustrated by John Rocco, was revealed on October 10, 2015; it shows the two versions of Apollo in an alley of New York City. Two months later, on December 10, the third chapter was made available for free download by USA Today. The first chapter was released along with the collection of short stories Demigods & Magicians on April 5, 2016. In addition, three trailers were released on YouTube to promote the book. A launch event occurred at the Harvard Book Store on the day of publication.
Title: The Hidden Oracle
Content:  The second book of The Trials of Apollo is titled The Dark Prophecy and was announced by Riordan on May 5, 2016. The cover and the first chapter were released on December 22, 2016. The Dark Prophecy was released on May 2, 2017 and sold 63,000 copies in the first week. The third book, The Burning Maze was published on May 1, 2018. The fourth book, The Tyrant's Tomb was published in September 24, 2019. The fifth book, The Tower of Nero was released on October 6, 2020.
Title: The Trials of Apollo
Content:  The Tower of Nero is the fifth and final book of The Trials of Apollo. The book was released on 6th October 2020. On February 14, 2020, hypable.com released the first two chapters of the book. While returning to New York, Lester and Meg McCaffrey encounter an amphisbaena, which recites the second stanza of the Terza Rima prophecy. Within minutes, they are attacked by Nero's Gaul, Luguselwa, or Lu, and her Germani. Apollo and Meg escape with the help of Luguselwa, who turns out to be on their side. The trio reaches the Upper Eastside. They decide to go to 

Question: when does the next apollo book come out?
Answer: May 1, 2018.