just got the popup screen. It will be a Christmas event.
New "festive" creatures (summonable with souls that look like the BNW-ones, so i expect also 100 ironites per souls, crap)
New creatuers are:
a Coalgiver Eddie (santa eddie)
Wicker Reindeer (Gunner, Sentinel, Assassin) (looks like the wickerdog queen wrapped in festive lights) and
a snowman mage.
then i got the "server maintenance" message again.