Hi Rachel!
Version 1 certainly won't have Mac support, because of the missing Vulkan support and the amout of work on the GUI in general.
In the future releases, however, things may get interesting. I don't expect Apple adding Vulkan support, but we could take a different route -- we could allow all nodes except the Vulkan-based ones. For example, we could allow all CPU nodes (strings, booleans, bitmaps), and perhaps even Stable Diffusion nodes. Though we haven't yet performed any experiments on that, so take my reply with a grain of salt.