The upgraded CDF detector is now collecting data with the aim of
integrating 2 fb-1 by year 2005.  The pursued B physics program is very
appealing.  CDF will provide measurements of various CP violating and B
mixing parameters which both complement and extend B-factories measurements.
In addition there is a variety of spectroscopy measurements on B_s and
heavier B hadrons which are currently accessible only at the Tevatron.  In
this talk we give a description of the new CDF tools available for B
physics, we discuss the preliminary results obtained with the first 70 pb-1
of data, and we highlight Run II B physics prospects.