We’re just putting the finishing touches on the 1.3 release of Palringo for Windows-based devices. The latest beta is as usual available on http://beta.palringo.com.
Notification Options
We’ve given you finer-grained control over how alerts are presented when you receive new messages. We believe we’ve come up with a settings page that’s both intuitive to understand, and flexible [...]

The Growl notification system is now supported and will be included in the next update; we also added the frequently requested ability to change the way Palringo notifies you of new messages.
As usual, you can download the latest version of Palringo for OS X from http://www.palringo.com//download.