I received two updated itineraries today with assigned seats, both for long ago booked reservations. One is for travel Thanksgiving week (WAS-NYP), and the other December 21 (NYP-RTE). In both cases I was assigned a seat at the two top table nearest the bathroom, although most of the trainset was empty and I was able to easily select a different seat by pulling up the reservation. Hopefully this means that they are rolling out assigned seating on all Acela first class routes.