The first leak of info confirms the two new HQ miniatures as well as providing some new information regarding the Haemonculus Covens supplement. The following information is from Felwether over at Warseer
Dark Eldar Archon (splinter pistol and huskblade as far as I'm aware) €18
Dark Eldar Succubus €18
Haemonculus Covens (Supplement) €39
Several HH books.
As always we will continue to add more information to this post as they appear.