If you mean a continuation of eps 27- (which would technically be Season 1 part 2) we don't know yet, but loads of fans are asking the same as you and me. Strangely enough they seem to have released a small perfect collection of Orange Island episodes AND Adanced episodes, so lets just hope they aren't picking 26 eps of each season and leaving it at that! >___<;
Hopefully, I think they will. I have seen images of boxart around for a second set where the number one is a two. They cant just release 26 episodes cause there would be no story. And if not, another DVD firm will do just like they did with the Super Mario Bros cartoons.
Season 1 Part 2 is available for preorder as of 10-23-07 on Amazon for $29.99. It says it will be released November 13, 2007, contain 26 more episodes, and has box art. Also, Wikipedia says that Volume 3 will be released on February 12, 2008.