From our previously reported info, pics have surfaced!

Duelist Pack 14 (Yuma 2):

Also includes reprints for Dododo Warrior and Dododo Buster.

Source: http://blog.livedoor.jp/maxut/archives/30794873.html

Duelist Pack 15 (Kastle Siblings):

Sources: http://blog.livedoor.jp/maxut/archives/30807896.html
http://blog.livedoor.jp/maxut/archives/30795588.html

Additionally, the accompanying sleeves for the Kastle siblings:

More source: http://blog.livedoor.jp/maxut/archives/30818272.html