The original will be updated to the 1.18[0] and given for free.
[0]: http://www.teamliquid.net/forum/brood-war/520460-starcraft-v...
[0]: http://www.teamliquid.net/forum/brood-war/520460-starcraft-v...
This bit is good to know. As usual Linux support will unlikely happen. You can guess from that as well that SC:R would lack macos support if they are not able to address the existing issues until its release.