Dragon Ball Super: What Happened to Gohan's Ultimate Transformation?

In trailers for Dragon Ball Super: Super Hero, Gohan is seen going Super Saiyan, leading fans to wonder what happened to his Ultimate transformation.

What form of Goku can be defeated by Gohan and what form of Goku is Gohan equivalent to at the end of Super? - Quora

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So what happend to the ultimate form gohan said he well get? : r/dbz

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Dragon Ball: Son Gohan / Characters - TV Tropes

Revisiting Gohan's SS2 Transformation