Congratulations on getting your Polaris! I don't know of any plug-ins for DAWs, but there is a universal editor/librarian for the Mac that can control the Polaris. It's called MIDI Quest Pro, you can download a demo of it at http://www.squest.com/. It can emulate the front Panel of the Polaris, it shows a graphic representation of both membrane sets when you use that function. A full license isn't cheap, but if you have other vintage synths, it can control them too. I have mine set up to control my Polaris, a Yamaha TX816, and a E-mu Vintage Keys.

Hope that helps,
David