For those not in the know, New Year's in Japan is big for video games, Nintendo in particular, because of the custom of all adults in a family (parents, grandparents, aunts/uncles, etc) giving each child in their family money for New Year's in a present known as otoshidama. I am not surprised at all to see most of the Nintendo evergreens rising by a great degree, especially titles like Minecraft and Splatoon 2. That said I am surprised that DQB 2 dropped on the Switch.
If this increase in software indicates an increase in hardware for the Switch it will be off to a great start in 2019.