A full review of current-induced spin-orbit torques in ferromagnets and antiferromagnets is now available as a pre-print: A. Manchon, I.M. Miron, T. Jungwirth, Jairo Sinova, J. Zelezný, A. Thiaville, K. Garello, P. Gambardella; Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems; arXiv:1801.09636