coup de main - noun
kü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Is Jack Antonoff releasing a new Bleachers song tomorrow?

With over 1000 puzzle pieces submitted to the fan-run @solvingB3 now, Jack Antonoff has today announced that "first thing tomorrow" he is sharing something ("smth")...

Antonoff has also taken to both his personal and the Bleachers Twitter accounts to tweet out what appear to be lyrics:

Perhaps he is getting ready to share a new song and tour announcement tomorrow?