rumeur tyty

Pyrovore remains largley unchanged save that it gets slight boost to wounds, attacks and initiative.
Its cost is slightly reduced while acid maw attack is given at a bit higher strength but at the cost of making only single attack.

Mawlocs and trygon both are cheaper. Mawloc especially is about 20~25% cheaper.
Mawloc's special rule Terror from the Deep is still much same......except that when the damage is resolved hiding in ruin or cover of other kind is literally useless.
Mawloc can also resolve damage(via Terror from the Deep) more than once if there isn't enough space.

Shadow in the Warp gives penalty to nearby enemy psykers' leadership.

Harpy is also cheaper. Its wounds and attacks are slightly boosted.

Carnifex and tyrannofex both became considerably cheaper. Around 25~30 percent or so.
Carnifex can still take devourer with brainleech worms which remains same as before.(Just without its penalty to enemy leadership)
It has less attacks and slightly higher initiative, but it can inflict more than one Hammer of Wrath hits.

Both types of gaunts became slightly cheaper albeit the upgrades are bit more expensive.
Zoanthropes are also cheaper.
And as forementioned in my previous replies, impaler cannons will be the bane of eldar wave serpents if they come within range.

As for biomorphs, crushing claws are changed in a way that they don't give extra attacks but are more effective against vehicles plus strength buff.
Regeneration probability became much higher.
Tentaclids and electroshock grubs are effective against vehicles(Bionic EMP I suppose)
Other than some boosted version of already existing shooting attack, I see no significant difference.

Taking account of its crushing claws, Haruspex has decent strength(stronger than mawloc, weaker than carnifex) with small number of attacks.
It however can increase its attacks depending on how many wounds it suffered, while at the same time can regain the wounds.
Its blood is also acid while its tongue attack can pierce terminator armour.

Boneswords inflict Instant Death depending on to-wound roll while lash whip boosts wielder's initiative.

Warlord traits include buff to synapse range, reducing cover, turning a forest into more carnivorous one, etc.
Psychic powers include another buff to synapse range, FNP, pinning test with additional leadership modifier, pseudo-psychic shriek etc.

Last thing. Malantai is NOT destroyed by a single zoanthrope.
And no more steel rain for tyranids.

Scything talons? Eldar striking scorpion chainswords without strength buff

Instinctive behaviour for instance have become more detailed, needing to roll a D6 to further figure out what specific effects it brings.
(For each Lurk, Hunt, Feed behaviour, roll a D6 : there are results for rolls of 1~3, 5, 6 respectively)

Speaking of lictors, these are what I remember so far : Deep Strike, No scattering, acting as living locator beacon.

Synapse Creature : 12" Fearless and auto-regroup

Adrenalin Gland : Furious Charge and Fleet

Toxic Sacs : poisoned CC

Lictors : Now have infiltrate but without bonus to reserve rolls. About 20% pts drop

Deathleaper : Slight pts reduction, Changed to HQ. Has warlord traits giving additional VP when wins challenge.
No fearless but gained infiltrate. Enemies can only shoot snap shots against it and it still give penalty to enemy leadership.

Tail weapons : CC weapon. Four kinds

1) S8, AP-
2) S6, AP5
3) Poisoned
4) S4 AP4 Rending

Ravener : Slightly less attack. No acute senses and no move through cover
May take expensive champion upgrade which can remove infantry model in b2b if all attacks hit.

Some of the psychics are : -D3 to WS and BS ; Allows friendly unit to run and shoot

Rending Claws have AP value of bolter. And No ymgarls

Hive tyrant can still give outflank to one troop unit by purchasing extra upgrade. Can only use tyranid psychics. So no biomancy

Flesh hook without rending

No 2+ armour for carnifexes. Although tyrants, tervigon and trygon can take it via bio-artifacts.(See below)

There are few bio-artifacts compared to other codices.
Some of them are : Bonesword with strength buff ; Ymgarl transformation(Which can increase armour save slightly)

Trygon of both kind are bit cheaper at the cost of slightly less attack. The tunnel rule remains largely unchanged

Instictive behaviours are fixed per unit just like former codex.
However, there are three specific results per behaviour depending on dice.

Lurk : Fall Back / Can shoot only when hidden / Can shot only when hidden + Stealth

Hunt : Go to Ground / Shoot closest unit / Shoot closest enemy unit + Preferred Enemy

Feed : Inflicting hits on themselves / Assault closest enemy units / Assualt closest enemy unit + Rage

I'm sure Behaviour(Hunt) table makes units to shoot closest hostile units, not friendly ones.
Rending claw isn't nerfed in anyway compared to previous version. Just additional AP.

Bio Artefacts of the Tyranids
1.The Maw-Claws of Thyrax- S: user AP5 Melee, Assimilate (can give preferred enemy), rending
2.The Norn Crown- Increases synapse 6"
3.The Miasma Cannon
Spit: Rang 36" S1 AP4 Assault 1, blast, poisoned 2+
Spray: Template S1 AP4 Assault 1, poisoned 2+
4.The Ymgarl Factor- Can choose a new ability every assault phase, Slashing Claw, Tentacled Limbs, Protective Carapace
5. The Reaper of Obliterax- S+1 AP3 Melee, Life Drain (rolls of 6 have instant death), Shred, Swiftstrike (+3 init)

Powers of the Hive Mind
Primaris: Dominion-6" additional synapse
1. Catalyst : FNP
2. The Horror: pinning test
3. Onslaught: Unit can run and shoot
4. Paroxysm: Targets WS and BS lowered
5. Psychic Scream: Nova power; 2d6+2 vs ldrship or take difference in wounds
6. Warp Blast: Burst 24" S5 AP3 blast, Lance 18" S10 AP2 lance

Biomorphs
Acid Blood- Initiative check or take damage
Acid Maw-sacrifice attacks for a single S5 Ap2 attack
Adrenal Glands-fleet, furious charge
Blinding venom-sacrifice attacks for S3 melee blind and poisoned 6+ attack
Regeneration: 4+ to regen
Toxic Miasma: suffer additional hits in melee
Flesh Hooks and Spine Banks: grenades with shooting attack
Toxin sacs: poisoned special rule
Wings: becomes flying monstrous creature
Tail Biomorphs: Bone Mace, Prehensile Pincer, Thresther Scythe, Toxin Spike

My flatmate managed to get a copy of the nid codex early. I managed to pry it of him while he's gone to work.

-I can confirm there is no transport bug
-Points reductions pretty much as rumored on most big bugs
-No Yamgarl Stealers - There is a Yamgarl Bio Artifact but not for use on Gene Stealer
-No Spore as rumored
-No access to main rule book psychic powers as far as I can tell
-Gene Stealers largely unchanged so pretty much destined to sit on the shelf
-Biovores look to be slightly cheaper and far more effective
-Flesh hooks are available to Warriors & Shrikes - So can swing at initiative when charging into cover

-No obvious way for the Haurspex to close the gap faster. Lictor looks kind of like a locator beacon and doesn't scatter it's self
-Scything Talons are S User, AP6, Melee - No re-roll
-Deep strike seems to be limited to wings and other special rules only ie Mawloc, Lictor, Trygon
-Shrikes and Sky Slashers are in

- "Subterranean Assault" wording is slightly updated but basically the same rule
-"The Horror" is -2 to leadership
-Swarmloard is still a beat stick, basically same points and mastery level 3. Old One Eye is now an HQ and cheaper but not to different by the looks.

It feels like a revision of the previous dex rather than a "new" dex but I'm sure it will be more competative due to the higher model count and increased ability to hurt your opponent outside of combat.

spore mines unchanged
drool cannon has the S of an hive tyrant and can melt away fire warriors
only tfex have 2+
to have +1attack u must have 2 pairs of scything talons and are normal melee weap. so 1 set does nothing
no more reroll to hit
crone has the T of a nob biker slighlty more wound then a tyrant ad an armor save of a fire warrior CAN BE GROUNDED
haruspex regain a wound if he inflicted wounds and does more attack based on how many wounds he inflicted.
rest of the weaponry is unchanged
pyrovore no torrent... and beware... drool cannon no torrent