Here's a link to the free rules + Contest details: http://privateerpress.com/free-rules-contest
If you purchase a Battlebox or a 2 Player Battlebox from your local gaming store and send Privateer Press a picture of the receipt, you are entered in a chance to win a free All in One Army Box and your store is entered to win a $400 prize pack.
It's an awesome way to promote some sales for your local your Brick and Mortar store :)
Privateer Press is now offering the Warmachine Prime MK2 Rules book (and fluff) for free on their website:
Warmachine MKII Rules PDF Download
Hordes MKII Rules PDF Download
