The limited edition of volume 13 of manga Shingeki no Kyojin
, to be released on April 9, 2014, will contain another OVA. The contents have not been announced yet. Vol. 12, which includes the Ilse no Techou
OVA, was released today.
Update December 11
The new OVA will be an original story based on another story of "104th Gunren Heidan-hen."
Source: Official site
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