For those of you planning to buy Apple's new G5: Servoy has been tested on it and is compatible. It's also amazingly fast! You'll be surprised about the speed if you've been running Servoy on G4. We havn't done any timed tests but it felt even faster than a copy of Servoy running on a high end Wintel box.
http://www.servoy.com/gallery/os/servoy_on_g5