We only make add-ons available in a Kickstarter campaign if we are going to print those extra products at the same time as the primary Kickstarter product. For this campaign, we are only printing Crimson Seas, Corsairs of Valeria, and the Ward Towers Pack. so we will not have any other VCK products available in this campaign.
Instead of add-ons, we have all the Valeria: Card Kingdoms products available in our website shop at a reduced price during this campaign. You can buy them right now and be able to enjoy them while you're waiting for Crimson Seas to reach you in November.
If you're in Germany, you can order Valeria products on the Schwerkraft-Verlag Webstore. Their prices are not reduced, but ordering from within Germany will save you the import fees.