Google web toolkit: now with Safari

Google's AJAX development toolkit now supports Safari. Can Gmail support be far away?

Google Web Toolkit - Build AJAX apps in the Java language

... Your GWT applications automatically support IE, Firefox, Mozilla, Safari, and Opera with no browser detection or special-casing within your code in most cases.

A GWT app will run on multiple platforms and browsers. I'd love to know how many people are developing real products with this free tool.