New results from NA57

The production of hyperons in Pb-Pb and p-Be interaction at 40 $A$ GeV/$c$ beam momentum has been measured by the NA57 experiment. Strange particle enhancements at 40 $A$ GeV/$c$ are presented for the first time and compared to those measured at 158 $A$ GeV/$c$. The transverse mass spectra of high statistics, high purity samples of $K^{0}_{S}$, $\Lambda$, $\Xi$ and $\Omega$ particles produced in Pb-Pb collisions at 158 $A$ GeV/$c$ have been studied in the framework of the blast-wave model. The dependence of the freeze-out parameters on particle species and event centrality is discussed.