Games Workshop is giving you more ways to customize some of your 40k minis. They've got two new upgrade kits for your Space Marines, as well as softcover variants of Horus Heresy books 1 and 5 available to pre-order over in their webshop.
From the announcement:
Upgrade your Space Marines with optional weapons and grab two of the Horus Heresy campaign books in softback with this week's Forge World pre-orders