After doing some research it's known as a tracking marker, used in cgi but in black and white. It helps the camera focus in one place or track movement.

 

Interesting. But I think that since its yellow in the trailer, its the testing version
But I don't know

 

I think you should retract your "fail" comment. Or admit you failed too!  

 

Maybe it was the tracking marker, and they decided last minute to change it to yellow to look like a Hazard symbol for the trailer? I don't know why they would, but it's an idea!

 

At least it would actually make sense for it to still be there if it was changed and not initially meant to be there. Unlike a certain head on a stick, in a certain 2011 movie. I'm lookin at you Dino lol!

 

Lockdown car transformation is awesome!!! I love the face mask and the hook on his hand !!! Can't wait to see drift in the tv spots

 

Nothing tops Barricade though. ..wait nevermind Soundwaves was the best.

 

Bumblebee

 

Did we forget just how amazing Optimus Prime's first transformation in 2007 was?

Or Devastator combining?

 

All those were great, I can't wait again to see the new transformations in this

 

that's awesome. i didn't notice that his hook flips out like a switchblade.

 

So stoked!

That last :30 alone has me giddy like a little kid on Christmas Eve. I can't wait!