No code. You have to go to the PS Store and grab them.
Check comment #19 & 48
I have another question regarding the champion´s blade and armor.
The article states that you have to participate in the beta and be a psn plus member to get the rewards. Well, i play the beta right now, but my PSN Plus membership wears out in a couple of days and i don´t want to renew it. Will i be able to nonetheless download the rewards when the retail version hits stores?
The article does not state that, if it does, then it's misimplied.
Simple as this - if you are in the Beta right now or join before we end, you are getting the Champions Blade and Armor, the end =)
Whether you are a PS Plus member or not, does not matter.