Blurry ones, the best kind of news!
From this QUALITY pic, we can see that the boxes come in variants of Grakeeper and Lswarm themes.
The promo cards appear to be:
-Sylvan Peaskeeper
-Ghostrick Jackfrost
-森羅の神芽 スプラウト (Sylvan Sproutcolyte)
-武神決戦 (Bujin Decisive Battle)
