will there be a download for Mac? My friend has had issues with using wine so it would be great for mac support
At some point - perhaps, soon - no.
If you've seen, NT has a chronic problem where generation does not match up per-platform (noticeable on daily/weekly), so cross-platform multiplayer will not be a thing without potentially rewriting everything (which is not something I can do here);
Supporting OSX/Linux requires writing separate "patcher" programs for them, which requires additional research on how their executable files work;
Supporting OSX in particular also requires to own a Mac to compile or debug anything.
Overall, might want to look at NT's reddit, since there were a couple of tutorials on configuring Wine there.