  We present the new results of the Wuppertal-Budapest lattice QCD
collaboration on flavor diagonal and non-diagonal quark number susceptibilities
with 2+1 staggered quark flavors, in a temperature regime between 120 and 400
MeV. A Symanzik improved gauge and a stout-link improved staggered fermion
action is utilized; the light and strange quark masses are set to their
physical values. Lattices with $N_t=6, 8, 10, 12$ are used. We perform a
continuum extrapolation of those observables for which the scaling regime is
reached, and discretization errors are under control.
