The below is the brand new version 2 design. Currently this special Mirai card is available if you sign up for one year membership (not available for 2 or 3 years membership).
Other goodies you will receive is a Mirai clear file (kimono design) and a Kinokuniya moekana card, which is just a trading card for your collection. It doesn’t entitle you to any privileges.
Existing member may choose to pay $12 to upgrade to the Marai card and your membership expiry date reminds the same. Truth be told, this option isn’t really worthwhile. If you are a member and your card is expiring soon, you may as well wait till then and renew your membership.