What is this thing going around that there is a new CAMP story with different characters?

Well, so far it only seems to be a rumor, simce the last book ended with quite a suspenseful cliff-hanger. No one knows for sure except for Riordan himself.

maybe there could be a connection with the new Egyptian series with the Greek one....maybe idk! But it could.....maybe......

He is writing a new book called the New Hero. There are three new main characters named Leo, Piper, and Jason. Percy and Annabeth are in it, but they aren't main characters.