I have zbrush 3.2 for mac.
Lately I’ve been considering getting a Dell, which obviously comes with windows. My question is, will I lose my zbrush license and be forced to buy a new one for windows, or can i deactivate my mac license and just activate a 3.5 license for Windows?
The license is not dual platform. You have the option of selling your current license and using the proceeds to help offset the new license (Support will facilitate the license transfer) or you can purchase a second seat for the new platform at a 50% discount. If you wish to do that, simply submit a Support ticket to get the necessary info.