From the front, which was just revealed today in Shueisha’s V-Jump magazine, Goku has his normal black hair slightly raised and is surrounded by blue aura as if he were Super Saiyan Blue with silver eyes!
We’re assuming the fiery red is simultaneously happening in the back as the blue aura and silver eyes are in the front.
Son Goku is getting a new transformation in Dragon Ball Super!
From our understanding, he is glowing a fiery red from the back, which we first saw back in June.