Tales of Asunda is in today's Diamond Previews and they've put a Spotlight on Sebastian as a result. You can see the article below along with the listing for Tales! Contact your local comic shop now to ask them to preorder it. It will only be available for them to order for 1 month. Diamond has also offered the trade paperbacks for Untamed to retailers for reorder since the story in Tales, "Niobe and the Stranger," stems from The Untamed.
PREORDER ONLINE: Not sure where to preorder? Follow THIS LINK to Previews World, click PREORDER and then register with PULLBOX to be connected to a shop near you.