  This is a writeup of a plenary talk given at the conference {\it HCP 2012}
held November 2012 in Kyoto, Japan. This writeup reviews recent theoretical
developments in the following areas of top quark physics at hadron colliders:
(a) the forward-backward asymmetry anomaly at the Tevatron, (b) precision top
mass determination, (c) state of the art NLO calculations and (d) progress in
NNLO calculations.
