I know I'm posting more news than I am reviews, and I'm so sorry for that, but so much has been happening lately! And a lot of that stuff is in the Percy Jackson fandom.
According to MTV, Logan Lerman is leaving the Percy Jackson franchise to further his career. On the other hand, this does come from MTV and the quotes seem to be taken slightly out of context. I do hope that the future movies do come out, even if Logan is replaced by a new actor for Percy. I don't exactly believe every word is written (especially if I don't hear it straight from the actor themself with no censoring).
The full MTV article is here, if you want to read it for yourself.