This. I've just got the email with the code for the Call to Arms special icon, so happy! 
I'm still considering whether to preorder or not, as I have little time to play in the close future and my laptop runs the demo quite poorly. Maybe an extra icon more would flip the sides... so my question is, do those who preorder get an extra icon for preordering (like the Holy Knights icon for CK2) or just a different one with respect to those who buy the game regularly at a later stage?
I'm still considering whether to preorder or not, as I have little time to play in the close future and my laptop runs the demo quite poorly. Maybe an extra icon more would flip the sides... so my question is, do those who preorder get an extra icon for preordering (like the Holy Knights icon for CK2) or just a different one with respect to those who buy the game regularly at a later stage?