I had thought I would be done with Dark Eldar posts today but more and more keeps getting posted and released out there. Please make sure you take all of the rules with a large grain of salt until we actually have copies of the codex.
A Compilation From Dakka Dakka forums
3 kind of armies with this book: Kabalyte, Wych Cult and Haemunculus army. But units are strong enough to make most combinations cmpetitive as well.
Universial rules
Night vision rule army wide (= acute senses?)
Strength through pain (mostly for Wych Cult units): After destroying non-vehicle unit, DE unit gets one pain token (1+ tokens means unit gets FNP, 2+ tokens means army gets Furious Charge, 3+ tokens means army gets fearless). Maximum is 3.
Combat drugs: One roll for for every unit with combat drugs before the game (all get the same).
Shadow Field in., 12“ assault not.
3-5 new units ,no old ones dropped. New units seem to be: New Archon bodyguard, new man-sized Haemunculi construct, new beast for beastmaster, Venom transport and something else.
Splinter weaponry makes a wound in a 4+ (normal poison weapon).
HQ
Asdrubal Vect (SC not on his Ravager).
His Ex-Wife
Lelith Hesperax
Drazhar
Archon
WS7, BS7, +1 HS, +1WS, +1A, +1LD compared to previous edition, can take Blaster (18“ range).
If he kills and enemy MC/SC in close combat, he doubles his Strength to 6. If he kills another one, he doubles his Strength to 10.
Can have bodyguard retinue (not Incubi anymore).
Wych Lord
Haemunculi
Troops Warriors (also in an elite version)
Stats as before. Splinter Rifle rapid fire, no plasma grenades or Splinter pistols.
Wyches (also in an elite version)
Stats as before. 4+ inv against cc attacks. Upgrades with special close combat weapons
Individual weapons with individual rules, e.g. net reduces number of attacks for all models in base contact to a minimum of 1 .
Chain-of-blades weapon gives +2A, as well as re-rolls to hit and to wound.
Incubi
T3, S3, 2 attacks but lose Tormentor Helm, with a 3+ save, can be upgraded with an Exarch (one option „preferred enemy“).
Have Klaives (2 handed powerweapon +1 strength). The klaive gives the unit to roll again (only one time) the 6 to wound.
Have a small advantage/preference for striking at Independent Characters in Close Combat
Their squad leader (WS5, 3 Attacks) has a weapon that either gives him +2 S or +2 attacks (2 single handed weapons), and gives each member of the squad another attack on a roll of 6 to hit (no limit)
Mandrakes have some kind of shooting attack that gets stronger with every kill they make
Harlequins As in Eldar Codex. No Solitaire.
Grotesques Bigger with Ogryn stats
Other Haemunculi Construct New. Man-sized.
Beastmaster Beastmasters can take different kinds of beasts.
Fast Attack
Hellions
Reaver Jetbike
Can turbo boost 36", S3, T4, 5+ save, -1 to save and -1 to strength compared to previous edition. Jetbike gives +1 to save and +1 to Toughness (included in the profile).
They can perform a "fly-by" attack on units they fly past WITHOUT getting into CC. There were several upgrades for reaver jetbikes that inflict different numbers of S3/4/6 hits on units when doing their 'fly by' attack.
Can take Melter Blaster (S8 with Melter AND lance special rule)
Ravager
Fast, skimmer, open-topped, AV 11 11 10, can fire all three dark lances at cruising speed
Talos In a standard and lighter version.
Scourges
2 new units in Heavy Support:
razorwing
Something completely new
Transports
Raider
Fast, skimmer, open-topped, AV 10 10 10
More expensive, many upgrades, a.o. +2D6 movement and 5+ Invulnerability save
has a Dark Lance
Venom
Formerly in Harlequin list (capacity 6)