Vejam o Editorial dessa semana, confirmaram que haverá um evento de BD mas eles não deram uma data:

Frisbee tosses giant holiday cookie! Let’s say an event is coming to the battledome, will Neopians be given advanced warning to train their pets? ~ johnnysslorg
Consider this your advance warning :) I don’t have a timeline yet, as we had to focus on the recurring site events that go on this time of year! But nonetheless, as y’all know, something may or may not be in the works…