Attack on Titan has been ruling the U.S. manga charts across channels for more than a year (see, most recently, "Top 25 Manga Franchises--Summer 2014"). FUNimation has the home video and streaming rights to the animated series, which also is broadcast as part of Cartoon Network’s Toonami block (see "'Attack on Titan' Comes to Toonami"). Vertical, Inc. recently began releasing the light novel series in the U.S. (see "Vertical Split"). The property is also hot in Japan, where a live-action movie will be released later this year (see "Live Action 'Attack on Titan' Poster").
Bushiroad shared the promo image accompanying this article along with the initial announcement.
Last month the company announced its release schedule for Weiss Schwarz and its other card games for the first half of 2015 (see "Bushiroad Reveals First Half of 2015 Schedule").