I picked up a new 2020 AT4 on Friday, it has the trailering mirrors, they are chrome capped. From what I was reading I wasn't sure what power features they had. I'm happy to report they power in and also power out with a button by the mirror controls. They mirrors move in tandem, so both either close in or power out together.
I was worried that the mirrors would be too big, but they fit the truck nicely aesthetically / size wise. They are a little big (blocking view) when driving in more congested areas like parking lots or 4 way stops, but that is something I think will be fine once I get used to it.