Supported Handset List

Is there a supported handset list for Android available yet? If not, are there plans to make one?

 

I don't think there is such a thing as "supported" as there are just too many.
But there was once a short note on the devices on which it was tested, but in the end it will be your job to test it against any device you intend to support or at advertise as such as it is on any mobile platform != iOS (That was one of the major reason the iOS took off as development target while others don't like anything Nokia uses)