Coming soon is a new rewards system for GW customers, that gives free dice, pins and or t-shirts. Of course there is a lot of spending here, and if this comes out before the Betrayal of Calth... a lot of people will get a good jump on it.
And before people start asking.... don't expect a Chaos Codex before the end of the year.
via Dosjetka on Bolter and Chainsword
Apprently, the system goes like this:
Spend 150 Euros -> free dice (unsure if just one or multiple);
Spend 300 Euros -> free pin (just Tzeentch or is there a choice?);
Spend 400 Euros -> free t-shirt (again, only one choice?).