updated 02:00 pm EDT, Mon June 8, 2009
Safari 4 official release
When coupled with Mac OS X Snow Leopard, the browser should feature crash protection that will prevent browser plug-ins from completely shutting down Safari. The new technology is said to shut down only the window causing a problem, leaving all other tabs and windows intact.
The completed version of the browser will available as a download for Leopard, Tiger, and Windows Vista/XP from Apple's website later today.