  After a hiatus of almost 6 years and an extensive upgrade, Tevatron, the
world largest proton--antiproton collider, has resumed the operation for the so
called RUN II. In this paper we give a brief overview of the many new features
of the Tevatron complex and of the upgraded CDF experiment, and show the
presently achieved detector performances as well as highlights of the RUN II
physics program in the beauty and electroweak sector.
