Just noticed on the AS website that next month the D lounge will be closing an hour earlier starting next month (10pm Sun-Fri & 9pm Sat).

9pm is pretty dang early to be closing... even 10pm is early given how many times I've flown out of SEA after midnight. Is it a seasonal change?
Luckily the other lounges are open later if you're trapped with a late flight... seems odd to close so early on Saturdays though.