So, I've had a cup of tea and a moment to calm down, and have (mostly) silienced my internal screaming. It's time to review everything we know about book five and update our theories.
There may be minor SPOILERS in this post, so if you don't want to know anything about the book other than the title and cover before you read it, please do not click.
Title: Thick as Thieves (TaT?)
Page Length:400 pages (source) That's longer than all the other books.
Megan informed me that this is false information. 352 pages is the count currently listed on Amazon.
Release Date: May 16, 2017
Cover-

Details -
A burning ship on the waves.
A dock with two dock ladders.
A female figure in a flowing dress with her hair in a bun.
Two figures walking together that appear to be male
A gold building, a megaron I assume, with birds in flight overhead
Hills.
The Keywords-
"dirt. gold. slave. lion. ship." (source)
(There's a ship on fire on the front cover! What does it mean?)
MWT-
Book 5 is the second half of The King of Attolia. (source)
Book 5 was re-written into first person from third person. (source) There has been speculation that the book is written from a new character's POV.
Theories, reprobates?
Is part of the book going to take place at sea? Will Pirate!Sophos finally be realized? Who set the ship on fire? Are we going to have a Queen Liz vs. the Spanish Armada battle between the Tri-nation Alliance of Eugenides (I just made that up) and the Mede?
Is Costis going to return as a major player if this book is picking up where KoA left off?
Whose megaron is that?
Who are the people walking and the woman standing by herself?
Is the slave Megan talking about Kamet? He did escape with Nahusersquish on a ship. Was Kamet kidnapped by pirates and eventually became one himself? Is this book turning into the Princess Bride?
GUYS!!! PIRATES!!!!!!

*really wants pirates to be in this book
I will try to add new information to this post as it becames available. If you see anything missing, please post it in the comments.
There may be minor SPOILERS in this post, so if you don't want to know anything about the book other than the title and cover before you read it, please do not click.
Title: Thick as Thieves (TaT?)
Page Length:
Megan informed me that this is false information. 352 pages is the count currently listed on Amazon.
Release Date: May 16, 2017
Cover-

Details -
A burning ship on the waves.
A dock with two dock ladders.
A female figure in a flowing dress with her hair in a bun.
Two figures walking together that appear to be male
A gold building, a megaron I assume, with birds in flight overhead
Hills.
The Keywords-
"dirt. gold. slave. lion. ship." (source)
(There's a ship on fire on the front cover! What does it mean?)
MWT-
Book 5 is the second half of The King of Attolia. (source)
Book 5 was re-written into first person from third person. (source) There has been speculation that the book is written from a new character's POV.
Theories, reprobates?
Is part of the book going to take place at sea? Will Pirate!Sophos finally be realized? Who set the ship on fire? Are we going to have a Queen Liz vs. the Spanish Armada battle between the Tri-nation Alliance of Eugenides (I just made that up) and the Mede?
Is Costis going to return as a major player if this book is picking up where KoA left off?
Whose megaron is that?
Who are the people walking and the woman standing by herself?
Is the slave Megan talking about Kamet? He did escape with Nahusersquish on a ship. Was Kamet kidnapped by pirates and eventually became one himself? Is this book turning into the Princess Bride?
GUYS!!! PIRATES!!!!!!

*really wants pirates to be in this book
I will try to add new information to this post as it becames available. If you see anything missing, please post it in the comments.
no subject
Date: 10/7/16 07:18 am (UTC)BOOK JACKET SUMMARY
SPOILERS!!! YOU HAVE BEEN WARNED!
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Kamet, a secretary and slave to his Mede master, has the ambition and the means to become one of the most powerful people in the Empire. But with a whispered warning the future he envisioned is wrenched away, and he is forced onto a very different path. Set in the world of the Queen’s Thief, this epic adventure sees an ordinary hero take on an extraordinary mission. The Queen’s Thief novels have been praised by writers, critics, reviewers, and fans, and have been honored with glowing reviews, “best of” citations, and numerous awards, including the Los Angeles Times Book Prize, a Newbery Honor, the Andre Norton Award shortlist, and the Mythopoeic Fantasy Award. Discover and rediscover the stand-alone companion stories The Thief, The Queen of Attolia, The King of Attolia, and A Conspiracy of Kings, all epic novels set in the world of the Queen’s Thief. Thick as Thieves includes two maps, a map of the world of the Queen’s Thief, and a map of Kamet’s journey.
Source:
https://www.amazon.com/Thick-as-Thieves-Queens-Thief-ebook/dp/B01LYAWJ19/
Thanks to Mikkaybear on tumblr!
no subject
Date: 10/7/16 07:27 am (UTC)#LostAtSea
#PirateKamet
#KametAsGoodGuy
#WeHeartKamet
#Kamet&CostisBFFS
no subject
Date: 10/7/16 11:29 am (UTC)no subject
Date: 10/7/16 03:57 pm (UTC)MAAAPPPPP!
Plus, new short stories in the new QoA and KoA!
no subject
Date: 10/7/16 12:07 pm (UTC)no subject
Date: 10/7/16 12:18 pm (UTC)no subject
Date: 10/7/16 04:41 pm (UTC)I was hopeful about the Kamet theory, as I really liked the idea. So glad to see it's happening!
no subject
Date: 10/7/16 01:18 pm (UTC)no subject
Date: 10/7/16 06:48 pm (UTC)no subject
Date: 10/7/16 07:34 pm (UTC)no subject
Date: 10/7/16 10:21 pm (UTC)Keywords & Title
Date: 10/7/16 04:19 pm (UTC)Slave and Ship are obvious. Though I should make the connection from burning ship to Kamet setting Nahusersquish's rooms on fire in QoA
#ArsonKamet
Does the gold refer to the gold Nahusersquish gave Irene before he escaped? Is he going to pass the blame onto Kamet? Maybe, Kamet betrays him in turn.
Dirt could be literally Kamet is dirty in this book or it could be a reference to he is as common as dirt.
Lion puzzels me the most. CoK made a clear association between lions and Sophos. Is Sophos going to become BFFs with Kamet? Is their shared slave status going to be a factor? Should I be taking that more literally? Is Kamet fighting lions in a gladiator arena?
#Lion'sKamet
#Don'tGetEatenbyLionsKamet
Does Kamet become the new thief? Is he as thick as thieves with Gen or someone else? Costis?
#Costis&KametThickasThieves
Re: Keywords & Title
Date: 10/7/16 07:35 pm (UTC)no subject
Date: 10/7/16 10:31 pm (UTC)Definitely sure Costis is somewhere in Media by now ..... didn't make the connection that he's the one that's going to be thick with anyone - but it does make sense because Costis has agreed to serve Gen's god, the god of thieves.
no subject
Date: 10/8/16 01:22 am (UTC)I like the popular theory that Costis is spying in Medea. Maybe, Kamet betrays Nahuserquish to help Costis. Ekk! Gen was trying to teach him the language. Hmm...? Hint or redherring?
Re: Keywords & Title
Date: 10/7/16 10:28 pm (UTC)...except we already KNOW what happened to Sophos during the events of KoA-CoK. And we know where Eugenides was. Maybe not in the gap between KoA and CoK, but I never thought that was very long.
So maybe the figure is Costis, and they just got lazy in designing. XD
EXCEPT one could also assume that is Attolia standing on the left? It looks like I'd expect Attolia to look. So is she looking after the men, or is she standing watch over her kingdom?
Holy Kamet, Eugenides!
Date: 10/7/16 04:36 pm (UTC)We should be getting a look at Medea through Kamet's eyes and it will be so interesting to hear his first person voice on his master.
Alternatively, the ship on fire is the same ship Kamet escaped on and he and Nahsersquish never made it back to Medea. However, I feel Gen&Friends would've heard if their mortal enemy was lost at sea, unless the Mede covered it up.
Backstory- How did Kamet become a slave? I must know!
A whispered warning implies Kamet betrays Nahusersquish, which is what starts him an his epic journey. Since, there is going to be two maps, I assume at least part of this journey does not take place in the Tri-nation Alliance.
Kamet must end up getting involved with Gen&Friends somehow. Is he captured? Recruited? Does he break in and leave notes for the queen? He does have a crush on her!
I am wondering if Kamet becomes the new thief. He is clever enough. I kinda always assumed he would be the new spymaster, if Relius was no longer mentally fit to do it.
Ultimately, I'm really curious to see Kamet's journey and how he gets from Nahusersquish's slave to being a major player in the dynamics of the book.
no subject
Date: 10/7/16 07:08 pm (UTC)no subject
Date: 10/7/16 10:34 pm (UTC)This post. Made me late for work! (Ok, I actually did make it in with one minute to spare .....)
Good news is it woke my sister up - and got her out of bed!!
(So one Eugenides says go to bed, and the other makes people jump out of bed.... pretty good match up!).
no subject
Date: 10/8/16 01:05 am (UTC)no subject
Date: 10/8/16 12:34 am (UTC)And I do think this was a legitimate concern, considering she has already stuck a sword through him in TT and chopped his hand off in QoA!
an_english_girl [logged out]
no subject
Date: 10/8/16 02:49 am (UTC)Whisper of warning...
Date: 10/9/16 04:11 pm (UTC)The gods have not forgotten the King of Attolia?