I was on AC008 recently. There is absolutely no divider between PE and Y on the 777UltraHD (Layout 2 International 777 on AC website). The PY seats have been upgraded, but the IFE is the older system. In flight service in PY was rushed, and I don't blame the FAs as there are up to 398 passengers in Y. My outbound on AC015 was a better experience. Better IFE and the PY service was better. Having said that, the PY service was still a downgrade since May 1 of 2016.