I will present a vast generalization of Taelman's 2012 celebrated class-number formula for Drinfeld modules to the setting of (rigid analytic) L-functions of Drinfeld module motives with Galois equivariant coefficients. I will discuss applications and potential extensions of this formula to the category of t-modules and t-motives. This is based on joint work with Ferrara, Green and Higgins, and a result of meetings in the UCSD Drinfeld Module Seminar.