  In the last few years the gap symmetries of many new
superconductors,including Sr$_2$RuO$_4$, CeCoIn$_5$,
$\kappa$-(ET)$_{2}$Cu(NCS)$_{2}$, YNi$_{2}$B$_{2}$C and PrOs$_{4}$Sb$_{12}$,
have been identified via angle-dependent magnetothermal conductivity
measurements. However, a controversy still persists as to the nature of the
superconductivity in Sr$_2$RuO$_4$. For PrOs$_{4}$Sb$_{12}$, spin-triplet
superconductivity has recently been proposed. Here, we also propose g-wave
superconductivity for UPd$_2$Al$_3$ (i.e., $\Delta({\bf k})=\Delta\cos(2\chi),
\chi = ck_{z}$) based on recent thermal conductivity data.
