No. The fifth book was the last in the series. Sorry.
Not in the Percy Jackson and the Olympians series, but there is another book coming out...not 100% sure when.
Yes
It is unknown
2/15/10
It is coming out on Presidents Day 2010.
Percy Jackson is the main character in the Percy Jackson and the Olympians series.
The fifth book already came out on May 4th, 2009. And there will be a Percy Jackson and the Olympians: The Lightning Thief movie coming out on February 12, 2010.
The book Percy Jackson and The Olympians: The Sea Of Monsters was released in 2006.The movie Percy Jackson & the Olympians: The Sea of Monsters is coming out on 27th March 2013. sorry all you percy jackson fans, you'll just have to wait. But I'm sure it will be amazing.
I think Rick Riordan concluded the Percy Jackson and the Olympians series. I don't think a book six will be coming out. Percy's story is continued in the Heroes of Olympus series with the book, The Lost Hero.
Percy Jackson and the Olympians was released in Australia on February 11, 2010. Rick Riordan is the author of the Percy Jackson series.
As far as I known there is no Kendall in Percy Jackson and the Olympians.
After Percy Jackson and the Olympians, and the Heroes of Olympus there is The Kane Chronicles.