A few different pieces of pony content are leaving Netflix at the end of the month. December 31st marks the removal of the Best Gift Ever holiday special, Equestria Girls: Forgotten Friendship, and Equestria Girls: Rollercoaster of Friendship. This is your last chance to watch them all on the platform before finding another place to check them out if you get the urge for a rewatch some day.
Hopefully they get around to adding season 9 some time! I still can't believe we don't have it.
Thanks to Ryan for the heads up.