Board Thread:News and Announcements in game/@comment-27996636-20170609104241/@comment-28362353-20170609193135

In the image, Trunks' Hands are pointed left and right, similar to the stance of the Final Flash, not up and down like the kamehameha. Goten' hands are up and down, Trunks' are left and right, they are most likely doing two different moves.