Can Xamarin.Studio build 64-bit solutions for OSX yet?

Hi,

We need 64-bit builds to integrate with the Growl 2.0 SDK. The recent Xamarin.Studio / Mono upgrades allow us to select a 64-bit build configuration and builds without error, but ActivityMonitor shows that's it's still a 32-bit app.

Can we build 64-bit apps in Xamarin.Studio yet? If not when is it likely to arrive (we're currently targetting Mono 3.0.6)

thanks ian