  This talk explores the role of flavor physics to constrain beyond standard
model phenomena and future prospects, from a theoretical point of view.
Possible implications of some experimental results in tension with the standard
model are discussed, such as the 4 sigma deviation in the B -> D(*) tau nu
decay rates. We use the examples of constraining new physics contributions to
neutral meson mixing and the search for possible vector-like fermions to
illustrate the expected progress over the next decade to increase the
sensitivity to new physics at shorter distance scales. We also speculate about
the ultimate limitations of (quark) flavor physics probes of new physics.
