I wasn't told about the option but rather, I asked my dealer if it could be done when my trailer was on order. They got with XLR who gave them the go ahead and pricing and I added it to my order. As an upgrade it was only $150 more as I got the credit for my manual awning. It would cost more after the trailer is already built as there is no power there. I'm guessing they could tap the power for the happijac bed system which is very close by on the inside? As I said, they now changed the line over so they are all power. They all also have an LED light strip under them just like the side awnings.
These things are constantly changing, not just with model year changeover. I missed a couple of options by two weeks. I've since added them though...