As to the suggestion of Azrael, I'm going to post this here. I heard a little tidbit that contradicts some information I posted earlier.
Next 3 releases are still Eldar, DA, Tzeentch.
I've now heard the DA Tac. Squad isn't coming with this release. (Which in no way means the release list has changed, the release dates do NOT change. If isn't coming it simply isn't coming.)
The Chaplain I heard about is also apparently going to be released separately rather than in a box set as I thought originally.
It was specifically titled a "Interrogator Chaplain" rather than just DA Chaplain ala the Blood Angel Libarian.
So as far as I know the release will just be a new Chaplain and Codex.
Release date May.
via Bloodthirster on Dakka
I'm not entirely sure if this is right, but I think I found a working redirect for a Interrogator.
It changes ala the Skitarri and Eldar ones. Couldn't find one for a new codex though...
On the new eldar
I heard it was a full new dex with a spotlight on the 5 major Craftworlds and some formations to represent some of their battle tactics. Whether the Craftworlds themselves will get anymore rules than that I don't know.via Tozudos a Dieces
I heard new DA dex originally, but since this new tidbit I'm not 100%. I'm going to keep digging for new info.
“Greetings to all.
Back to you from my slumber to inform you of something that has come to me from very reliable sources. You know that if you see no update Stubborn to Dieces is because we have a bomb.
Contents of the box ninth edition. April 24 in pre-ordering. All minis are new and bring the rules into and round bases.
-Chaos: Two characters, one exclusive; five miniatures cavalry, ten warriors of Chaos, Chaos demons d5, some kind of monster Chaos.
-Light: Two characters 10 holy warriors 10 warriors of the new faction, five holy knights on horseback, dwarf war machine.
In light faction minis grail knights appear.
This is the information that we can bring you. Keep you informed.”