We are getting almost no codex information yet, but lucky for us, we have our first real bit of information from someone that has spent some time with the codex. It might be later that we try and get a QnA session going, but at the moment we, at least myself, are grateful for what we get.
So enjoy the latest info, and I am sure more will be coming. Remember, always take a grain of salt until the codex is in hand.
via the Faeit 212 inbox (has to remain anonymous source)
If you lose 25% of your unit at the end of your close combat phase then you must take a leadership test on 2d6. You subtract the amount of models lost to the overall leadership total. If you pass then nothing happens otherwise you lose wounds equal to the amount you failed the combat by.
For the case of shooting then the daemons count as being fearless.
If a herald joins a unit then the unit is not effected by daemonic Instability
Heralds: have +1 to weapon skill, wounds, initiative, attack and have LD 9-10
Soul grinder has sky fire in profile (220pts base)
All daemon units have a 5+ invulnerable save as standard.
There is upgrades to give heralds 3+ and even 2+ save (although it is very expensive)
Greater daemons are tough – the keeper of secrets have 6 base attacks and gains more attacks for every kill. She also has rending.
Blood thirster- has amazing stat line:
WS BS S T W A I LD SV
10 5 8 7 5 5 5 10 4+
Re- rolls all failed to hit and to wound.
All greater daemons have the option for 2+ save – although it is on the 65pts+ mark
Fate weaver can make a enemy hero turn into a spawn if they fail an invulnerble save.
Still re-rolls saves (but only invulnerable – no longer armour)
Basic troops stay the same, points have been reduced minimal
Bloodletters – reduced by a point
Daemonettes – reduced by 2 points but are now strength 4 on the charge.
Plague bearers – reduced by 3 points a model but have lost feel no pain but gained shrouded.
Pink horrors- increased by 2 points but have better saves.
Blood crushers are now monstrous beasts and have rage. (They are really expensive)
Beast of nurgle are vastly improved – and have gone up in cost by 30+ points
Physic powers are a bit to random and can hurt you badly if you roll badly
Nurgle is the best of a bad bunch.