No.
No, sadly not. Percy's series has come to an end.
No, the next series does not even include Percy Jackson.
Frankly, there is no series after the Percy Jackson and the Olympians after it is already complete.
The next series after Trials of Apollo in the Percy Jackson universe is the "Magnus Chase and the Gods of Asgard" series.
Yes, but not as the main character.
No, the last book is the 5th book which is called called 'The Last Olympian'. On the other hand, there will be another Camp Half-Blood series set after the Percy Jackson and the Olympians series. This, however, does not count as the next Percy Jackson book. The next series will be called "Heroes of Olympus".
Probably, but not a major one.
The Heroes of Olympus was the next related series.
The Lost Hero is the next series in the "Camp Half-Blood" book series. It does not revolve entirely around Percy, Annabeth, and Grover this time, though.
The same person that's been in all the others Percy Jackson
The next Book is called the Last Olympian. NO if's or buts.
The Percy Jackson series is concluded. However, the sequel series, The Heroes of Olympus' first book, titled The Lost Hero, was released on October 12th, 2010.