Via: http://www.yaotomi.co.jp/blog/used/2013/01/pentax-q10-1.html
(in Japanese)
N.B. EVA stands for Neon Genesis EVAngelion, a Japanese popular science fiction cartoon series back to 1995.
Update (1-31): More official information about these special versions of the Q10 can be found at the Japanese EVA online store link below:-
http://www.evastore.jp/pc/index.php?toid=PC_ARTICLE&fromid=PC_ARTICLE&article_id=11500&category_id=top&toid=PC_ARTICLE&fromid=PC_ARTICLE#item