New Chaos Codex Leaks

DEATH GUARD
Army will be more Elite, similar to Custodes

All Detachments will be good

Cultist, Termi Lords, Termi Sorcerer will be gone

Mortarion will lose his Ignore Modifiers Aura (Pretty Easy guess with the Fulgrim VS Mortarion article floating around here). Points will go up, Will be able to kill 10-12 Marines in a single turn. Will be very strong but wont be a must take.

Deathshroud Termies can drop within 6 Inches and Charge, T7

Blightlord Termies have 2 Damage Melee and Extra Strength and AP when shooting within Contagion range, T7

T6 Plague Marines, New ability

Iconbearer may have an ability similar to the current Helbrute

Interesting things that have already happened.

Heavy Bloat Drone is back on the Deathguard page on the WH Webstore

Both Chaos Terminator Lords and Cultists are missing from the webstore, Terminator Sorcerer is still up interestingly.

Warcom article indirectly Leaking Mortarion losing the Modifier Aura.


WORLD EATERS
No more Advance & Charge and Feel No Pain – that’s a big hit to speed and survivability.
On the bright side, the old +2″ movement buff is now built into many datasheets.
Devastating Wounds helps fix the army’s long-standing AP issues.
Detachments

Berzerker Warband – +2 Strength and +1 Attack on the charge. Likely to stay the go-to option for raw damage output.
Goretrack Onslaught – Basically the “Khorne Klown Kar.” Berzerkers can hop out of Rhinos, do their thing, then climb back in. Wildly mobile and great for playing the objective game.
Khorne Daemonkin – Lets you bring up to 1000 points of Daemons. Fun concept, but Blood Tithe points can be inconsistent and tough to plan around.
Unit Highlights

Angron – Absolutely gutted. Resurrection nerfed, slower, no more army buffs. He’s just… not worth his points.
Eightbound/Exalted Eightbound – Now have clear, distinct roles. More specialized, which is a nice twist.
Hellbrutes – Still here (take that, Emperor’s Children). In Goretrack, they can walk through walls and pull off nutty 6″ consolidates.
Terminators – Basically unplayable right now. RIP.
Defilers – Niche use: can surprise deep strikers with reactive charges or shooting. A party trick, but not game-breaking.

Slaughterbound: New kid on the block. Think “diet Eightbound” with healing powers and a deadly demise boom built in. Solid utility.
Khârn: Fight on death is now a maybe, not a guarantee. But hey, he’s got an 8″ move, so he’s not lagging behind the squad.
Lord Invocatus: Lost his scout aura, but now walks through walls like he owns the place. He’s the Kool-Aid Man of the roster.
Master of Executions: Lost fights first, but he can earn you CP for character kills. A fair trade if you like to gamble.
Demon Princes: New tricks. The winged one dishes out mortal wounds by soaring overhead, while the footslogger discounts stratagems nearby.

Khorne Berserkers: Strength 4, AP1, but can now roll 20 deep. Great for board control, but without a points drop, they’re a luxury item. However, in the Berserker Warband, they hit very hard.
Jakhals: FNP is gone, but they make great candidates for devastating wounds via blessings.
Eightbound & Exalted Eightbound: No longer just “the same, but better.” Now they each play a distinct role depending on your matchup.
Terminators: Pour one out. Speed’s better, but without the durability or mobility tricks, they’ve lost their punch.

Chaos Spawn: These things are disgustingly good now. Scout, Advance and Charge, FNP. They’re your new shock troops.
Hellbrutes: More utility than a Swiss army knife. Consolidate tricks paired with blessings make them pinballing nightmares.
Defilers & Forgefiends: Range play is on the table again, especially with some cheeky anti-deep strike counterpunching.
Maulerfiends & Predators: Built to punish weakened targets. Solid frontline pressure units now.
Land Raiders & Rhinos: Rhinos got real spicy. Reactive disembark and better objective holding make them part transport, part denial tool.




WHC Articles
https://www.warhammer-community.com/en-gb/articles/xjrnugbz/sunday-preview-rot-and-ruin/
https://www.warhammer-community.com/en-gb/articles/4bvbomik/death-guard-detachments-bombard-the-lackeys-of-the-corpse-emperor-with-plagues-and-poxwalkers/
https://www.warhammer-community.com/en-gb/articles/dyqyr3kw/praise-the-lord-of-skulls-with-new-world-eaters-detachments/
https://www.warhammer-community.com/en-gb/articles/hywvdtyb/two-new-villains-arise-for-the-death-guard-and-world-eaters/