So you guys did not get a piece of coal in the mail like the rest of us?
Nope! There is no Christmas in Tamriel and ZOS will only ever celebrate Temrielic holidays in ESO, if ever even those.
https://www.youtube.com/watch?v=vK06SgtXin0 I'll be pleasantly surprised if we get a maintenance patch before Christmas to fix known bugs confirmed in various threads that have been plaguing us for more than a month.
But I'm not sitting on Santa's lap then holding my breath til I get one.
Servers will be down?
There is no Christ in TES lore, therefore no Christian holidays. Also with a broad, global subscriber base, it would would be ill advised to potentially upset those that don't believe in or celebrate Christmas. Maybe they'll give us something for the Tamrielic New Life celebration instead.