Chapter 74 of the Ball Super manga Vegeta 's new transformation . According to the image, we can see Vegeta transforming into a new version very similar to SSJ3 .
Check it out:

Vegeta's powers might be due to his training with Beerus , the God of Destruction.
Synopsis of Dragon Ball Super chapter 73:
In chapter 73, Goku was partially defeated by Granola, and Vegeta is the only one standing in the villain's way, determined to wipe out Granola's race.
Therefore, the manga continues to be published monthly in Japan since the anime's future is currently uncertain.
Finally, Goku and Vegeta face a new challenge: Granola , a character who suffered at the hands of the Saiyans under Frieza's orders, and now seeks revenge.
