Did the back to front process return? Recently got a travel reminder in the e-mail with this on the right side:

You in the back, board first
If you like to be one of the first people on the plane, book a seat in rows 20 to 26. In our new boarding process, customers sitting in those rows are invited to board first, and then customers in all remaining rows may board. So if you like to be first, choose from the last!