"Hoaxette has returned for a full month to provide you with useful items to play practical jokes on your friends. You should pay her a visit! Additionally, undead jesters are roaming the streets of Tibian cities again. You better be fast if you are interested in their loot, since they will disappear again with the server save of April 15."
I'm asking that because all of the Christmas bundles along with Christmas decoration vanished after the end of December festivities (I had a couple of these bundles stored with me).
They don't, you can keep them all the year, as far as I know
Tibia Summer Update 2020 - private test server invitationsMay 18, 2020
Interview with Benjamin Zuckerer - managing director at CipSoftMay 07, 2020
Improving posts is now rewarded with reputation pointsApril 11, 2020
Looking for a community managerJune 09, 2019