TMD theory and phenomenology

The announcement of the Electron-Ion Collider (EIC) has kindled an era of rapid developements in our theoretical understanding of TMDs. In the past year, theorists have presented evolution equations of TMDs at four loops. As a consequence, phenomenologists have performed the highest precision extraction of the unpolarized TMDs. These studies have been complemented by an amitious theoretical search for processes at the EIC which probe novel aspects of the spin and gluon structure of the proton. Nevertheless, theorists have just scratched the surface on the exciting TMD physics that can be uncovered by the EIC. In this talk, I'll introduce several promising subjects in TMD theory and phenomenology including: TMDs at sub-leading power, which serves as a new direction for precision determination of the TMD structure of hadrons, TMDs in a nuclear medium, which allows us to address how the nuclear medium alters the structure of hadrons, TMDs at small x and GCG physics, and energy-energy correlators and the nucleon energy-energy correlator.