After the energy upgrade of CERN's LEP electron-positron collider, an
integrated luminosity of 22 pb(-1) has been collected by the ALEPH exp
eriment during the 1996 data taking period, with a centre-of-mass ener
gy of 161 and 172 GeV. With this data, new studies of the standard ele
ctroweak theory and of quantum chromodynamics observables are presente
d and, most notably, precision measurements of m(W) are obtained from
the first observation of W pair decays. No evidence of Higgs boson pro
duction, nor any signal of supersymmetry or other new physics has been
found in the data so that limits are derived, in the framework of the
SM and of its minimal supersymmetric extension. The anomalous four je
t production excess that was reported at lower centre-of-mass energies
of 130-136 GeV is partially confirmed with the new datal though the o
rigin of such excess in not yet well understood and necessitates furth
er studies. All the presented ALEPH results are preliminary and subjec
t to modifications.