Anyone know why the new iMac doesn't include Thunderbolt 3? It is necessary for me to continue to hold off purchasing any new computers until they have Thunderbolt 3 (I need to be able to use external Nvidia GPU for ray tracing with Cuda cores). Intel announced Thunderbolt 3 months ago. In the past, Apple has been ahead of the curve with Thunderbolt. It's really surprising to me that they are releasing a new Mac without it.