From what we can tell, SMITE doesn't seem to be throwing any large event this year. However, they do have the Holiday Chest returning.
Perhaps what makes SMITE's Holiday Chest stand out amongst other similar chests offered for other similar titles is that the devs are donating $1 to the Child's Play charity for every chest purchased.
The Holiday chest costs 400 gems (roughly $8) and has 15 different items available. 12 skins -- 10 returning and 2 new -- along with a snowman ward, a winter loading frame, and a snowman avatar. The two new skins are Ice Mage Agni and Snow Day Scylla, pictured above.