The Facebook Generation comes after the inbetween generation(the early generation Z's are born in 1996-1999, they remember times before facebook and hd but they don't remember a time before 9/11. They are included in generation z as a sub generation.) They are directly after the mid generation Z's who do remember no Facebook and smartphones not existing vaguely.
Generation Y man: "yeah but you learned about 9/11 from a textbook"
Facebook Generation: "I remember the Boston Bombings"