Fans learned of Meg Cabot's plans to write a seventh Mediator book in summer 2011. Since then, Meg has made several mentions of the new book on both her blog and her Twitter.
In February 2012, Meg hinted on her blog that she was planning a trip to Carmel-by-the-Sea to do research for the seventh Mediator book.
In January 2013, Meg confirmed her trip and also posted a status update for the books on her Twitter account:
For Mediator fans who are asking, yes, it's true there will be a 7th book. Went on secret research mission to Carmel last year. However...— Meg Cabot (@megcabot) January 20, 2013
...it's going to be a BIG book so it's going to take a while to write. Thanks for all your support, love, & patience! XXXOO Suze & Jesse— Meg Cabot (@megcabot) January 20, 2013
She later elaborated in her blog:
A lot of people got excited when a certain gossip blog posted that there might be a new installment of The Princess Diaries series coming soon. That was pure conjecture on the part of that blog (though I appreciate the enthusiasm, and it certainly could happen someday).
But I'm definitely adding a 7th installment to the Mediator series (though it's not written yet, so don't expect it anytime soon)! Sometimes inspiration hits when and where you least expect it.
Around this time, there was also a little teaser posted on the official Facebook page for the Mediator series:
You heard it here first...Suze and the gang will be back in a new full length book (Number 7) sometime soon. A little older, a little wiser, and a whole lot sexier! (Well, maybe not that much sexier. Jesse is still an old-fashioned boy.)
Optioned for a TV Series!
In April 2013, Meg announced on her Twitter that The Mediator has been optioned for a TV series!
Exciting news! The Mediator has been optioned to FremantleMedia (Tim Williams and Julia Pistor producing). Suze is in excellent hands!— Meg Cabot (@megcabot) April 17, 2013
(She then posted about it on her blog, slightly more info about Fremantle Media but still not a lot of news yet)
Julia Pistor is the producer who had the rights to the movie before they expired. The fact that she continued to pursue the project in TV form after the film rights expired makes me optimistic that she is dedicated to the series and hopefully will create a faithful adaptation that sticks to most of the series' main plot elements!
So there's the news as I know it regarding The Mediator. I'm very excited about all this and am hoping these developments will bring new fans to the series!