After discussion amongst the staff, we've decided to let Vinteralgk become a Seasonal Pixpet instead of a holiday pixpet, so that players don't need to panic over not finding one in these last few days of the xmas event.
(We are intending to introduce pixpets for the 4 seasons alongside pixpets that will be around year long, please look forward to it.)

edited top post to reflect this as well.