It was only a matter of time. GW rolls out a bundle deal for the rules of the game.
images via Grot Orderly:
Behold the Warhammer 40,000 Librarium:
So, you get the 40K Rules (minus the other 7th edition volumes): and the following codices:
Chaos Space Marines
The only hardcovers left out are Stronghold Assualt, Escalation, and the Supplemental codices like Iyanden, etc…