Got my WD today. There is not a lot of information available, but I'll post what I have found.
Great Unclean One
M:6 (Blurry) WS:6 BS:3 S:6 T:7 W:6 I:4 A:3 LD:9
Can use spells from the Lore of Nurgle or Death and has poisoned attacks in addition to the Daemon of Nurgle and Terror special rules.
Plaguebearers: Went up by one point
M:4 WS:3 BS:3 S:4 T:4 W:1 I:2 A:1 LD7
Have the Daemonic Gift Plaguesword which gives poisoned attacks, in addtion to the Daemonic and the Daemon of Nurgle rules
Herald of Nurgle
M:4 WS:5 BS:5 S:5 (I think, it is blurry) T:5 W:2 I:4 A:3 LD:8
Can be a wizard and use Nurgle or Death
Can have one of three different locusts giving the Plaguebearers either poison on 5+, extra s4 hit when hitting with poison or giving the unit regeneration. Interesting to see how this works for the other heralds
Bloodletters: (up by 2 points)
Lost a point of S, but gained scaly skin 6+ and the hellblade gift (probably kb). They also have the Daemon of Khorne special rule.
Pink Horrors: (up 1 point)
Same rules except that a unit is a level 1 wizard and that they have the special rule blue horrors. As everyone else they also have their Daemonic God's special rules.
Daemonettes: (down one point)
Completely unchanged if Daemon of Slaanesh is AP.
All lesser daemons can have a banner up to 25 points.
Bloodcrushers: (down 5 points)
Are now special. Juggernaughts are as in the WoC book. The riders are now ordinary bloodletters with their 6+ scaly skin save, so they probably have the same save as before.
Fles Hounds: (down 5 points)
-1S. Have scaly skin (6+), Collar of Khorne. Can be Ambushers for 10% of their base cost.
Flamers:
pretty much the same as in the WD update as far as I can see.
