
The news has been out since February, but it's only now that I've managed to harvest a fair bit of information about it.
Slayers has thus far had three seasons--Slayers, Slayers Next, and Slayers Try. An officially announced fourth season is on the way: Slayers Revolution. The official site can be found
here, but most information is being kept mum.
Slayers Revolution will air this July in JP. 26 episodes are planned divided into two 13 episode back to back seasons. Reports (unsurprisingly) mention a new character.
Authors : Hajime Kanzaka & Rui Araizumi (courtesy of Fujimishobou, Fantasia Bunko)
Director = Takashi Watanabe
Scenario Writer = Jiro Takayama
Designer for the original images for the characters = Rui Araizumi
Designer for the animated characters = Naomi Miyata
Producing Company = J.C. Staff
Cast
Lina Inverse = Megumi Hayashibara
Gourry Gabriev = Yasunori Matsumoto
Zelgadiss Greywords = Hikaru Midorikawa
Amelia Wil Tesla Saillune = Masami Suzuki
Xelloss = Akira Ishida


The first reads: "This time, I'll be the star". Along with him, there are comments "Xelloss is the leading act, will Lina give it up?". The article didn't seem to tell anything more, such as the staff and the cast. Anyway, there is a notice in the article, "in the July issue, some important announcement will come!"
Slayers Revolution will feature the old cast; supposedly, Xelloss has a more formidable role and it has been hinted tongue-in-cheek that he may even qualify as being called the main character. It seems to mostly be a joke due to his pretty boy popularity status.
The story is an anime exclusive, like Try--but unlike Try, at least a few of their ideas will be drawn from the final plotarc from the novels. That means any number of previously unseen big names could come around: Zelas Metallium, Deep Sea Dolphin, Dynast Grausherra, Sherra (seen on cover art), and Luke. As Gourry lost his sword at the End of Try (like he was supposed to in Next), odds are the story will involve Gourry's new Blast Sword from the novels.
It is confirmed that Megumi Hayashibara will not only return as Lina (with the rest of the old class), but will sing the opening and ending again, reputedly recorded April 15.
Screen Captures:Zelgadis casting a spell (Flame Breath?)AmeliaGourry and LinaXelloss (my favorite)Note the remarkably clearer animation. They are retaining their director from the earlier seasons, but he seems to have taken light influence from the director of Slayers Premium (Director of Saber Marionette J), whilst still holding true to original character design.
Other images:A Revolution poster with old screenshots from prior seasonsCoversZel, Gourry, Lina and AmeliaIn conjunction, All 15 original novels will be reissued with new panoramic cover illustrations. If anyone is interested, contact me. This will probably be limited to JP, considering what a struggle I had just to get them to publish through the first plot arc in the US. Jeremiah, the translator, however, deserves props for showing up at our meetings and listening to his fans.
It is tentatively said that Funimation is likely to purchase the dubbing license, considering they are still working on releasing Slayers Try and have redubbed the first two seasons already; considering the passing time, it's tentative to say the old english VAs will return, but we can pretty much count on Lina and Zel's voice actors to return. Crispin Freeman has a habit of going out of his way to reprise his role as Zelgadis.
Personally, I hope some voices do leave; Sylphiel, Amelia, and most of all Xelloss could use some major work.