Hey, for those that want a native OSX setup. Here is a zip with the .app files (.exe equivalent for OSX) that you can put into the main folder, and just run and it will work. I have personally tested this and have been playing in Teldrassil since last night.
I don't know how well it will work with the Installer, since those .bin files mess it up for usage on OSX, but if you download the Vanilla WoW 1.12.1 torrent, and just plop these in, it will work. Its how I got it working last night before the new installer was added.
Its posted on mega. I don't take credit for the patching or anything of these files, I just found them after hours of searching to get files that worked on 10.7+ Intel macs.
https://mega.co.nz/#!WQBxEZAD!MTrrNLf_l ... FWdZwpuFcMHope that helps someone. If I have some more time, I might make a native package for OSX that can be used like an Installer for OSX for Mac people.