This is one massive release schedule and list. I have added the sources additional comments at the end of the list. When it comes to something like this, I dont really know which way to comment, as there is a lot here. This summer acccording to the list, we should see a campaign book that includes Eldar, Admech, and Dark Angels vs Khorne for volume 1. Volume 2 would include Tzeentch added to it with new units. So most of this is wrapped around a very large two volume campaign book.
Please remember that these are all rumors.
via WhispererofTruth on Dakka
Hehe rumour time. Eldar are coming, but that release list? Err no. 40k release list for the next year and abit ahoy!
Eldar
Week1: Plastic Jetbikes/Shining Spears
Week 2: Clampack Autarch and Codex
Dark Angels
Week 1: Tac Squad and Codex
Week 2: Summer Campaign Book Volume 1: Eldar Admech and DA vs Khorne
Tzeentch
Week 1: New Daemon Unit
Week 2: Lord of Change
Week 3: Rubric Marines + Campaign Book Volume 2 (DA, Admech, Eldar, Harlequins + Khorne and Tzeentch)(Including a Tzeentch Daemonkin type supplement + rules for the new units.)
Week 4: Campaign Box: Clampack Sorceror and Chaplain
Assassin Boxed Game
Plastic Assassins.
Tau
Week1: Campaign Box: Tau vs RG (Plastic Commander and Captain)
Week2: Clampack Ethereal and Codex
Deathwatch
Week 1: Plastic Marines
Week 2: Plastic Termies
Week 3: Plastic Vehicle, Codex
Week 4: Clampack Watch Captain
Genestealer Cult
Week1: Hybrids
Week2: Limo, Codex
Week3: Clampack Patriarch, Magus and Broodlord re-release
Genestealers included in dex.
Horus Heresy
Week 1: Boxed game.
Apocalypse
Week 1: Plastic Nid Dominatrix
Week 2: Plastic Dias of Destruction. (Including Vect and plastic Court.)
Week 3: Apocalypse Book.
Tyranids
Week1: Codex. Dominatrix added, Genestealers removed.
For the 2nd half of the list other than what I listed I'm a little hazy on the details. Dates, order etc. Common sense would dictate the new C.SM dex dropping with the box set, but I haven't anything other than: "New Assault Squad." I'm a little reluctant to say this is coming at X time if I'm not even 70% sure. It could also just be down to GW's love of tacking Space Marines onto everything.
For what's worth I heard the story of the campaign was along the lines of this:
Spoilers
Imperium losing, badly. Forces are RG, IG, Knights, Admech and Assassins vs Tau. Assassins try to kill Ethereal. RG go after Commander. Deathwatch deployed to turn the tide.