First a necessary disclaimer: Rumours about an upcoming Codex Tau Empire come up every now and then, the last summary on the Heresy Online forum predicting an August release this year. Harry thinks that Tau are still farer away than most people think. Ghost21 has a reputation of providing loads of rumours, with most dealing with the far future, one being spot on (Dreadfleet) and one being far off (Augst release of Sororitas models, with detailed description of the released models). So I present a summary of ghost21's Tau rumours (he is the only source) as provided by Warseer's Tastyfish, but I can't guarantee the reliability and personally remain sceptical until at least some more of his rumours turn out to be true. And I will edit ghost21's spelling and grammar as always
I will try to keep this first post updated. Again thanks to Tasytfish for providing the original summary which I just reorganised a bit (and will probably expand in the future).
Edit: Added some stuff including rumours by other posters. Harry also estimates a tau release just before 6th edition. Frgt/10 thinks all miniatures are done.
General Codex rumours
Not the next book, but probably after Black Templars
Seems in proofreading stage.
Author may be Phil Kelly
Seems to be ast 5th edition Codex
Tau Units
Army has 4 basic
HQs and 3 basic troop choices excluding changes made by any Special Characters if there are any
Return of 4 old
SC, plus 2-4 new ones
New
SC "Iceheart"
No Court of the Archon/henchmen type mixed units
Ethereals may get increased
BS and preferred enemy.
Stealth suit mechanics may change, markerlights won't change much.
New sniper suit (seems to be the snipersuit mentioned below)
Shas'O get a stealth armour option, may be an experimental suit like Shadowsuns, or the experimental suit might be a third option
4 new 'Tau' units: Note these will not all probably be in the first release - there's 2-3 plastic kits here and we already know 3 for the 4 that are coming out.
Dropship (carries up to 15 models or 2 battlesuits and 10 models, or 5 battlesuits)
Fighter (flyer)
Snipersuits
"Ubersuit"
The Ubersuit is a Battletech/Mechwarrior sort of thing (probably Dreadknight sized), with a special 'ridiculous' ability that lets it rain down shooting if it stands still.
Looks a bit like one of the Battletech Mechs that is named after an ancient weapon
New Tau models
4 box sets, and 4 blisters in wave 1
Demiurg plastic box
Battlesuit plastic box (maybe including sniper and broadside)
Vespid plastic box (redesign that looks much cooler)
Assault transport(?)
Demiurg ancient blister
New Tau
SC blister
Crisis suits have been completely redesigned (not just recut sprues and ankle tweaks), less boxy and including a 'morphic weapon'
Hammerhead and Skyray stay the same.
Allies and Auxiliaries
Vespids get two slots. They get a heavy version (in addition to the assault unit) with some sort of heavy weapons.
Just for reference, here an old Vespid concept sketch:
ghost21 wrote:One of those is close to the vespid heavy.
Kroot get an additional unit
No Knarloc riders,though perhaps something big (new WFB monster-szied) for the Kroot
Kroot fieldcraft rule - presumably switched to Stealth and Infiltrate
USR
Maybe minor psychic powers for Shapers or Shaper like character this is something Ghost has heard from other people and not stated directly
Demiurg have 1
HQ, 1 troop and maybe 1 else. Presumably the Elite choice mentioned elsewhere
Demiurg ancients are a thing Probably
HQ, but could also be the elite unit
Possible Demiurg elite choice
Demiurg Ancients: Think of them as cranky old wise men who saw the Imperium in its infancy. They have seen the Eldar come and go, and thought it was just another decadent empire, though they normally take hundreds of years to make a decision. The tau have something special the demiurg like.
Demiurg are "equal to banshees without the scream" so presumably anti-armour close combat, or at least have that as an option. This might also be elite unit rather than the troop one, or be a unit that does both - like a kit that would let you make Boyz and Ard Boyz (or Dwarfs and Longbeards). An elite unit, but being an upgrade to a troop slot to keep out the way of the battlesuits.
Demiurg are apparently a lot less Dwarfish than the initial concepts, instead being more like little stone golems (Ozruk from WoW was mentioned)
As a tongue in cheek nod to the fate of the squats, there is a named Demiurg (who may or may not make it as a
SC) who survived fighting Tyranids and personally killed a large monster by drilling his way out after being "Swallowed up by the 'Nids"
This Demiurg is aware that the Ethereals have some kind of power over the Tau (maybe other races too) but not the Demiurg, who have presumably signed up for political reasons and of their own free will
Demiurg and one other new race join the army, the latter being something bizarre or at least something we've not seen before.

urm yes close....
No Gue'vesa (human auxiliary troop) unit or models
No Nicassar.
No Zoats.
"All I know about the other race is: they MAY have 6 limbs."
"They have plans for this guy from an old concept sketch":
Rumours not by ghost21:
The Man They Call Jayne from Second Shere forum
http://secondsphere.org/index.php/topic,129654.0.html :
I have heard a few rumours for the GW high up through a mate. His source is GWs own Phil Kelly, who has just started work on the Tau Codex.
1.) 6th ed boxset is set to be Eldar Vs CSMs, as they will be the among the first 6th ed codexes.
2) Eldar will be first, then Tau or CSMs
(...)
A new "Insectoid" Tau Aux race. Thats all I know on that bit though. Not niccasar it would seem.
Forgeworld stuff is moving across too. TX-42 and Hazard. Maybe even the Remora.
Frgt/10 wrote:All the new Tau models are done; Dave Thomas worked on them for roughly 18 months and he's finished them all now.
They're just waiting for a releases slot, I don't now when that is but my guess it is has since been locked in since I found out this info.
Harry wrote:Dave has been working on something pretty big. (Helpful as always. )
Also Frgt/10 is correct in that Dave Thomas has been exclusiely on Tau for 18 months but he is not 100% correct. Whilst MOST of the models are done. My understanding is Dave Thomas still had some bits and bobs to do. (i am guessing finishing characters?)
But even so that means they could be in the next six months.
(But I am not expecting them quite this soon).
Frgt/10 wrote:also Harry I heard down here that he was 100% done with them, hence why he was in oz for GD. Or have you heard otherwise in the last month or so?
Harry wrote:I don't know when they are released.
I just said six months could be possible.
I have them for the early summer in my, constantly updated, release schedule as the release right before 6th Edition
(...)
What I heard was ... 'The Empire is expanding to include More races' (Plural)
From 10-21-11:
Liberium Online's Jared Van Kell wrote:The Tau codex belongs to Cruddace, lets get that fact straight. That is all I am going to say on that issue.
Black Templars on the other hand was always going to be Phil Kelly's pet project. The only way Ward or Cruddace would ever get the Black Templars codex off him would be to prise the rough drafts out from his cold...dead...hands.
Unless of course they offered him the Dwarf Army Book...............(whistles innocently).
From 11-18-11:
Jared Von Kell wrote:Some of these rumours [In regards to rumor sumamry posted up on BOLS] are spot on others not so spot on. 4 generic HQs are the Tau Commander, Tau Ethereal, Kroot Master Shaper and Demiurg Ancient. Blisters are, as far as I am aware, a new Tau Ethereal, Demiurg Ancient and 2 special character blisters.
From 11-19-11:
Liberium Online's Jared Von Kell wrote:I've also heard that the Skyray will be getting a better choice of missiles in addition to the Seeker missile which is believed to be S6 AP4 Blast, however you have to choose the missile type at the beginning of the game so you cannot mix and match. Despite the payload ts main role will still be target marking.
From 11-25-11:
Jared Von Kell of Liberium Online wrote:The Demiurg Special character is apparently the one called Iceheart.
The Battletech Mech in question is the Warhammer IIC mech (no joke about the name.) one of the unseen mechs in the battletech universe. The suit itself is quite big, not quite dreadknight sized but it can "brace".....yes Matt Ward does play Spacemarine. The trouble is that it will be competing against Broadsides, Skyrays and Hammerheads, all of which have improved, a lot.
From 11-26-11:
Jared Von Kell of Liberium Online wrote:Well from what I can understand from the mechanic is this. A particular troop type is associated with a particular HQ but in doing so confers a special ability on those troop types.
Tau Ethereal - Unlocks Tau Firewarrior teams.
Tau Fire Commander - Unlocks Tau XV8 Crisis Battlesuit teams.
Kroot Shaper - Unlocks Kroot Carnivore squads.
Demiurg Ancient - Unlocks Demiurg Warrior squads.
I can understand the thought process behind the mechanic from what I know of the basic fluff regarding the Tau.
However I would have thought that Firewarriors would have always remained as basic troops and an Ethereal would have unlocked Honour Guard but it seems from the snippets of info I've been able to peice together that an Ethereal confers Preferred Enemy (Everything) and BS4 on those Firewarrior squads he leads making Honour Guard redundant.
Sorry I misread your question. You referring to the models and I was referring to the rules in my answer as I was in a bit of a hurry when I replied.
As far as I an aware none of the existing plastic kits are going to be changing so the firewarrior and tank models will stay as they are now.
This means you can get your brother started now.
Again sorry for the confusion.
From 11-29-11:
Jared Von Kell of Liberium Online wrote:All that I can say is known about the Demiurg is that they are the Tau's main anti-MEQ unit. How effective they are I cannot say.
From 12-1-11:
Jared Van Kell of Liberium Online wrote:Actually you might be surprised. My sources and the several other rumour mongers have started indicating that Templars might actually be next followed by Tau, this is normally a sign for me that what I am hearing is correct but with recent developments such things are by no means certain.
I have however recently discovered that the Tau are in the proofreading stage of development which means that the codex is written but it has not yet quite gone to the printers. Now this means that all GW have to do is give the nod and the codex can be printed in numbers pretty quickly. All they then have to do is ramp up the advertisement, distribution and product support and we have them ready to go for our very much enjoyment.
From 12-29-11 by
BoLS
40K RUMORS: Tau Upgrades
Posted by Bigred at Thursday, December 29, 2011
So, here's the latest word on the rumored upcoming Codex: Tau Empire
They say the Tau are ever expanding their empire with not only new member races, but steadily updating and improving their equipment. Lets get to it:
-Demiurg Units ~plural
-New Vespid unit and a new weapon for the wasp-men.
-New FireWarrior heavy weapons - expect new anti-tank / anti- infantry heavy weapon choices on a 1 special per X ratio (probably 1 per 5 or 10 fire Warriors)
-Plastic Barricuda (or other renamed fighter)
-Possible Human allies (Rogue IG militia that joined the Tau Empire) ~said to be the iffy-est of these rumors.
-New Kroot HQ choice (with the ability to "unlock a Kroot themed army) ~sounds like an homage to the old Kroot Mercs list.
-Kroot Carnivores upgraded to either a 5+ or a 6+ save by default.
From 1-2-12 by
BoLS:
40K RUMORS Tau Upgrades - Part 2
Posted by Bigred at Monday, January 02, 2012
-Battlesuit Commander: shifts ONE battlesuit unit to a Troops FOC slot.
-New Close Combat Battlesuit
-New Ethereal named character
-Ethereals will get upgraded to be the "leader" role in the Tau Empire army. (so not the best BS, or WS, but other interesting army-support tricks)
-New deepstriking Dropship (an Orca-ish platform on par with the IG valkyrie)
-Up-gunned Drone variants (specific anti-tank and anti-heavy infantry options) which can be attached to almost every TAU unit in the codex
~Hmm. Off to start expanding my Tau Empire army now before the bum rush in a few months...
Old rumours by stickmonkey September last year:
New Heavy support platform. Basically immobile deep striked! heavy weapon and crew. Rail and Ion Cannon, and missile launcher are all obvious options here, but nothing solid with the rumor.
Assault Skimmer. Something between size of piranha and hammerhead, fast skimmer open topped, assault on disembark.
Update: Yes, its assault after a flat out move, and has the "drop troops along path" option similar to the storm raven. its supposedly a dedicated transport option for one new unit. (I don't place faith in this last bit, its very rare in current GW systems to see a vehicle kit limited to one unit/role...if GW is trying to sell them they will be available to more than one unit, or be a separate entry unto itself.)
New Drop ship. Not the FW one, but something new. Holds a boatload of fire warriors, or a few battle suits.
New battle suits. Not sure if these are the "next gen" suits or just heavy suits redone with out metal bits.
notpop wrote:During a mooch around one of the better known Independent Games shops in the UK I was told that GW are no longer accepting orders for Tau stock indicating that a release is proably imminent. So guessing the traditional WFB/40K pattern following Necrons there will be some WFB goodies followed by Tau in the new year.
The bloke who told me was a blowhard so season as appropriate, but the owner corroborated it so I thought that I would put it out there.
Here some old pics from 2008 of sculpted models, unsure if they are released though:
Kroot Shaper
Ejected Battlesuit pilot:
Test sculpts by then trainee Matt Holland shown the same year.