  Recent results on K$^0_{\rm S}$ and hyperon production in Pb-Pb collisions at
40 and 158 $A$ GeV/$c$ beam momentum from the NA57 experiment at CERN SPS are
presented. Yields and ratios are compared with those measured by the NA49
experiment, where available. The centrality dependence of the yields and a
comparison with the higher collision energy data from RHIC are discussed.
