Striker sent the following:

searching through online book stores I found Jedi apprentice #3 and #4 are available for pre-order...at Amazon.com they say #3 is due in august(if all is right from Amazon that means starfighters of Adumar, Tales from the new republic and Jedi apprentice #3 all in august...one can hope!)...as for Jedi apprentice #4 they say october is the release date and can be pre-ordered...Books-a-million and barnes&noble.com both says #3 is due July and #4 is out for september...who is right?...your guess is as good as mine...scholatic has no news on their site...so...guess we wait!

Well, from what we know #3 in July and #4 in September are the correct dates. GhentZ has also nailed down the release dates, costs, and page numbers for a few of the upcoming novels (Jedi Apprentice, Vector Prime, Starfighters of Adumer), so you might want to check that out.