From the announcement:
Alright everyone its time for the amazing PayPal / Pledge manager survey!
This is the time to let us know the specifics of your order, and add any additional things you may like.
Also, for people who could not join though the Kickstarter pay system, this PayPal is open to the public! We would love to welcome new backers to Drake! As the interest has been very high AGM is going to be posting some new awesome surprises for folks that I am sure you will all enjoy, sneak peeks will follow shortly! Come and join us, all KS II Horizons pledges are open!