Always forget about the calendar but there is no information on there about the tower. Also technically it is February...
Thumb up for mentioning the calendar. Two thumbs down for not actually checking to see if any information about the Year of Darkpaw was on there before giving the advice.
There was just a message posted in Announcements on the forum. Mission and HA to be released sometime in the month ... keep watching for an announcement. Not very helpful IMO.
I would be surprised if they stick to a schedule for this through the year. That's probably why it hasn't been added to the calendar.