Are there special customs associated with Tu B'Shevat,

Tu B'Shevat occurs on the 15th of the Hebrew month of Shevat (this year January 22). It is customary to eat from the 5 fruits (of the seven grains and fruits) that the Torah enumerates when describing how blessed is the Land of Israel: "A land of wheat and barley, and (grape) vines and fig-trees and pomegranates; a land of olive-trees and (date) honey."
(Deut. 8:8) These seven grains and fruits are called the seven species (shivat haminim) and they have a special status. It is also customary to eat a "new" fruit that one did not eat yet that season in order to recite the "Shehecheyanu" blessing on it.