Goku new transformation grey eyes light blue aura is it related with the other picture released?
Happy to update this when Dragon Ball Super tells us, but I'd have to go with the new form.

The hair is the same as you've pointed out 


New Style
Grey-ish streaks


But also quite importantly his eyes have changed to Grey, and we have Super Saiyan, Super Saiyan God, Super Saiyan Blue, and Super Saiyan Rose as evidence of new eye colour meaning a new form!

As to the aura, that could be just a choice made for the images to make it look good in advertising. If I had to pick one as the actual Aura, I'd pick the top image as it makes more sense for the Aura to be a close colour match the hair and eyes. I expect it may look closer to grey in Dragon Ball Super than it does in either of the images.