While we're still waiting for official news regarding the return of the second season of Dragon Ball Super, the promotional series Super Dragon Ball Heroes showed us the return in the style of Goku and Vegeta Super Saiyan 4, which seem to have definitely exceeded the limits of this form.
Despite the introduction of this new stadium, the recap of the previous episode surprised fans: "Following their advice, Goku and his companions rely completely on Xeno Goku and Xeno Vegeta for their powers. As soon as they transform An intense red light emanates from the bodies of the Xeno warriorsthat are surrounded by a different aura than those previously seen. How will the battle with the mighty Janemba end ?! "
In fact, the scarlet color of the aura has led to believe that the new The transformation to Super Saiyan 4 comes directly from the Super Saiyan GodThis would disproportionately increase the performance of the form introduced in Dragon Ball GT. In discussing the 5 reasons the SS4 should become Canon, we saw how Broly manages to harness the power of oozaru without however assuming the shape of a giant ape.
This detail, combined with the ability to Goku and Vegeta transform into Super Saiyan God, could actually bring the new SS4 to Dragon Ball Super. Recall that a new opening was shown for the SDBH anime and that we may see some news for Vegetto.