We knew that Microsoft was working on Windows Phone 7 compatibility with Mac. Microsoft stated, "Later in 2010 Microsoft will make a public beta available of a tool that allows Windows Phone 7 to sync select content with Mac computers." It now appears that "later" is going to be sooner than expected.
Electricpig.co.uk has been testing the Windows Phone 7 Connector for Mac and has been pleased with it's performance. The Connector, once loaded on to your OS X machine, syncs your iTunes content and playlists with your Windows Phone through iTunes. There is no support for Wifi as of yet.
It's not Zune for Mac but it's a start. Speculation is that a Beta of the Connector will be launched on October 24. We'll keep an eye out for the Beta and keep you posted.